I'd have to look into it but there are a bunch of users running DSC panels just fine. The developer supporting envisalink might have a better idea of any issues and required work arounds.
@moh [RELEASE] Envisalink App & Driver for Vista/Ademco/Honeywell Alarm via smartthings-nodeproxy
There is a link to the DSC part in this post as well as some additional background info.
