@Lugia Sounds pretty interesting that. So you can use a VCA prior to the filter as an accent (etc) control with the post-Filter VCA shaping the sound.
You could do that, sure...it would involve adding in an extra bit of CV on top of whatever modulation source's output is already controlling the pre-VCF VCA, but that's easily set up with a linear, DC-coupled mixer in that control path.
Far more interesting, though, is using a multi-VCA module which mixes to a breakable mixbus (think Veils here) to "strum" different waveform outputs on one or two VCOs. You could have a triangle wave come up on a hard attack via one VCA, then have the second VCA add a square wave to that gradually by using different EG settings for those VCAs, with the result being a very marked timbral change without using anything more than a second VCA and EG. With a complex oscillator, this can get even crazier...and you STILL wouldn't be making changes via other modules to get at that craziness!