The sound is a little strange to me, as the two pianos sound acoustically isolated yet also stuck together right to left. Also, when the large amount of pedaling stops after the slow intro, the sound seems basically different, perhaps as a result of switching to the non-pedal samples? I think maybe having the two pianos seems to need them being farther back in the "stage" with more ambience blending them (though still being able to hear the separate sources), especially recalling hearing some two piano concerts where you cannot get very close to the huge grand pianos.
But that is a very small thing compared to the music - fantastic! I love this piece. It is simply brilliant musically. This needs to be with some other movements on a CD. Perhaps a sonata? Anyway, it is great music. I am sounding like a broken record saying that with Guy's music I guess, but can't help it...