That's perfect, actually! Great work.
So the flipflop object is the key, then...
The velocity response feels a bit odd, somehow. I think it's because if you hold a note, when you release a subsequent note, the previous note can change in level, rather than returning at its original level, which can make things sound a bit odd, I think. I'm not sure there's any way around this. I'd probably just disable velocity mapping to VCA. Otherwise, it's great, though.
It's funny, I was just thinking earlier that I was really missing a setup that would do that classic Mono Legato sound, where if you held a low note while hitting higher notes, you'd get that swoop up to the higher note, then back down to the low note on release of the high one. I really like that effect, and remember it from long ago playing on a Roland Alpha Juno.