Here's something that I had done a while ago to test out a GigaPulse template. (Three instances: front. mid, back, with inputs feeding each with left, right and center.) It's very episodic, so instruments in different positions can be heard. There are some sustained strings, but only in a few bars. There are tremolo strings in another.
One limitation of VGS is that many of the sustain patches have very slow attacks, including the strings. My solution is to stack the staccato 1&2 patch with the sustain_mod-wheel patch. It's not ideal, but works well enough.
The result is not unlike GPO's method. If I play with more velocity the staccato patch plays more loudly, giving a more aggressive attack. If I play softly, the attack isn't very audible. If I take the mod-wheel down, then I get just the staccato result. If I push it up, the sustain sound dominates. I used this technique on the brass and string ensembles in the above piece.
BTW, I can load all of the VGS samples that I use along with the PMI Bos 290 demo piano in a single template. And I only have 1 GB of RAM in my machine.