Mixing Pianoteq with Ivory

Hallo,  i´m a new Member - Greetings to all other members here!  Coming from Germany, so my English is not very perfect -but i hope, all can understand...)

I´m  43 years old,  started to play Piano since 4 years....and it is very hard to learn, but i like it.   Everytime - also als child - i loved the sound of a real Piano,  but we doesn´t have one , and i not started to learn to play, also not at school.

With the envelopment of Keyboards,  Soundfonts  and  PC-Technic  i startet to play Keyboard  with connectet PC ,  from the Internet i searching  Soundfiles. 

From Trachtman and Bovbjergs Soundfonts  (who is knowing this older soundfonts? )  which sounding not bad, and for the time they also very big (4-5 years ago was a soundfont with  20-40Megabyte big...)   i come to the Hamburg STeinway  form the Company MilanDigitalAudio with 6 GB.    THIS was my first Soundfont, i loved....and with this sound  i started with new Motivation to learn and play the Piano, because it sounds so much better as all the "KeyboardSounds" before......  For me this Soundfont was much more better than the steinberg.

One of my  last Soundfonts was the  Virtual Grand from ArtVista - sounding great - but hard to  play for a beginner, especially the lower notes are tooo powlerless - but the Rest of this Sound is very very good , so good,  that also a Beginner like me, gets fun and Inspiration by playing.

With less inspiration and "sole" - but nevertheless much more better is my last soundfont : Ivory from  Synthogy.

And after this???    i heard only  one time on a Demo-website the new Pianotech.....
Only 2 weeks later i buy it.   Famous the idea,  famous the technical solution...)  and  my most expensive 8Megabyte i buyed before..)))

Now i love both....the strenght´s and Presence of the Ivory,  and the fine sound of the 
Pianoteq,  the soundboard and swinging Resonances  of playing the pianoteq, all the favourite Items of it......but it sounds sometimes   - for me! - a little bit  artificially and a little bit  too soft.  It not has the PUNCH  of a real piano in the  normal loudness (sorry for this description..i hope you understand..)) .  Clear - in more louder parts it has  the punch - but playing a little bit softer,  it looses to fast the punch.....

In Future  i thing this will become better - it is the start of a new Generation - thats true......and i like and love the first two  versions - i certainly will support  Pianoteq in  the future  .

For me - i try something new - i tried to load in my Vst-host both:   The Ivory Steinway, Loudness to  9,5  -  Tuning to "Stretch",  440Hz , Finetuning -1cts --------------and the Pianoteq Version2.0,  (also the first Version 1.5 is good in this combination), 440HZ -  Temperament "Equal" - "Unison Width"  to  0,5 -  "Loudness" to  -1,0.

I´m falling from my  seat...)   as i heard this combination........For me  very very well,  all the features  of the Pianoteq ,  and the Pianoteq fills now the  "holes" from the Velocity Layers of the Ivory, especially in the softly played parts of music there is now much more "Feeling" and  Inspiration, on the same time much more PUNCH by the Ivory in the louder parts -  for me it sound much more like a real Piano  then before,  better than the Ivory solo,  and better than the Pianoteq solo.

Who tried this also??   What do you think about this idea??

The Problems:   The major problem i have is the harmony in the lower notes, because both Pianos seems to have different  swinging-waves.  And in the higher notes , you can here  Disharmonics.   The stretching of the octaves from the lower to the highest note is difficult,  to bring both pianos  together without Disharmonics.   
I change the Finepitch from the IVORY  to  440HZ -1cts - this helps.
Also the Pianotech is not so loud as the Ivory, Ivory 9.5,  Pianotech Loudness -1,0, this reduced also the Effect of hearing 2 pianos.
And the  Unison Width  have to be down - more than 0,5 the Disharmonic in the higher parts  becomes more and more like a Honkeytonk....

Ok - i hope,  i started a  interesting new Posting  and a interesting Discussion.
Perhaps other Fans of Computer-supportet Pianosound have new or better solutions for this idea to combine both worlds.

I know - the basical idea of mixing two pianos  is with a technical View  Nonsense....but,  try first, if you have both - Ivory  AND Pianoteq  - you will be suprised  about  the win  of  Richment of this sound.   It worth the effort,  to try to find a solution,  to reduce or eliminate the  Disharmonics,  and find a solution of the problem,  that  different waves,  length of waves of different Pianos normally can not be mixed together, without loosing  Quality and Cleanlyness of the single Piano.....but - try it, and hearing first the  result  of such a Trial....than i think, you can better understand , why i´m thinking about this.

At least - Thank you very much  to  Pianoteq!!!