Revalver looks cool for sure, but it suffers from the same maladies that every other amp sim app has that I've tried - errors that shouldn't happen while installing, high latency, and incompatibility with Riffworks. Don't get me wrong - Peavey makes great stuff. My stage rig includes a Peavey cabinet with 4 Sheffield 1290's - it's become crucial to my sound and is part of what people remember me by - that being said I was excited to find out about Revalver - only to be disappointed when I got an error message about some driver that was missing when I installed, even though my system far surpasses their minimum system requirements, I had nothing else running when I installed, and used the file directly from their website. Plus I've read where several other people say it won't work with Riffworks. If it doesn't work with the awesomest recording app in the solar system, it's of no use to me.
