Well, my system (see photos) is mixed as well, but the Doepfer
modules
are all in one case, and the A Solutions are in their own case as
well.
This has worked very well for me! Can't speak personally as to mixing
in a single case. I DO know that the A Sol case has BOTH Doepfer and
A
Sol power outlets...

RE: A Vs VA. I prefer to record and perform in the home studio with
the
analog modulars and do outside live performances with the Nord
MicroModular and Korg MS2000R. They're more portable, can hold many
quick changing programs, and are (IMO) pretty close to the "Real
Deal."
If your audiences can tell the diff between A and VA, then I wish we
had your PA and soundperson!!

-andrew bunny