Moreover, SC has a link to softube (the owners of dynatube technology) but that web page doesn't have much info on dynatube itself either. Basically a link back to SC.

Well, at least in softube web page you can find the manual of their AmpRoom, which I assume is applicable to the dynatube guitar amps (marshall, fender and vox, but not the MB).
On the other hand, the AcousticFeedback plugin looks really attractive to me. I would like to think that there is hope for a scope version...