As you well know, plugging into one Mackie is far different from plugging into a Bose PAS.
I did notice something today though. It seems that the T2 sounds better when plugged into inputs 3 and 4 than it does into 1 and 2. Or maybe it was just my ears.
Anyway, the "phase cancellation" is a non-issue for me.
I am loving the Tyros 2 after a double today. I have another double tomorrow. Maybe by Monday I'll have time to make some more observations.
DonM