Soundquest,
For certain, DSI glide is a mystery. Perhaps a mathematician could keep track of it and arrive at an accurate prediction of its behavior, note by note, but I certainly can't. I can foresee how it will react about 1/3 of the time. But I don't have a problem with setting the Amount. It does respond with more glide or less glide, rather than in an on/off manner.
I made this patch with two other instruments in mind: the Korg Prologue and the DSI Prophet 12. Regarding the first, I don't think a serious comparison can be made. Keep in mind that this is a single sound, rather than one that is layered. There is a fair amount of reverb added, as well as onboard delay, but no chorus. So, this is basically raw Evolver. I don't think the Korg could come within a hundred miles of the sonic richness and depth. As for the P12, I don't know. I'd need more time to work with one (please, God!). But I wonder whether or not a P12 could match this patch. I think the Evolver has an exceptional filter, seemingly better than the one on the P12. But that wouldn't stop me from getting one!