Guys, tried above and seems to work fine - Thanks a lot for the help. Don't think i'd figured it out by myself.
brywool: i'd tried the hard-panning option as you state above, but it just didn't work. For some reason, some "unwanted" signal managed to get into each different systems (PA vs Amp).
What i've now done is include a FX loop in the last effects block chain of the acoustic patches and only connect the "send" cable with no "return" cable back to the pod.