I'll actually have a system very similar to this in the near future.
I've had the P252 for quite some time now, but in a couple of weeks my Sointuva's should arrive.
To be completely honest, I'm fairly happy with how my system sounds right now. One of the main reasons for me making the switch to the Sointuva was the customizability of look - especially with the wood options which I think aesthetically look far more appealing than any veneered option (which they will replace).
Alan probably contributed to over 90% of what I understand about objective audio. I just checked and my PM thread with him on ASR is over 200 messages long (plus more through email) - he went out of his way to explain how I can do fair AB tests, diagnose some strange audio anomaly I was experiencing with my setup (which wasn't related to his product), and even recommending filter settings on a DAC that I owned (he read the manual without me asking and said what he would use based on their definition of what the filter does technically). So my past experience with him really made a difference in terms of me trusting his products.
I've made quite a few audio purchasing in the past without auditioning pre-purchase and been disappointed with the result. The last time that happened was when I was looking to replace an old(ish) A/B dac/amp with something more efficient - Alan was the only person that responded to my disappointment about said amp (or at least the technology used) with some objective measurements that likely explained my subjective impressions (which was that compared to my A/B amp, bass had completely gone). That lead me to go with the P252, that with my RME-ADI2 or Topping Dx7 pro is all I'll ever need (by the way I level matched those dacs and blind AB tested them... I couldn't tell them apart).
The Sointuva I'm hoping will at least bring as much audible enjoyment I have with my current speakers with the added bonus that they are smaller and suit my room décor far better. If they sound better to me subjectively then that's even better