The beta runs great for me. I was not expecting to love the Revv models (because I'm not sure I'm the biggest fan of the other channels in the real amp) but the Green channel is great for me. Some Marshall sims get close, but there's still some differences. The Revv green is very, very open somehow.
The dyna cab way is something I'm getting along with fairly well and quite fast. It will be interesting to see if we can also get vendor dyna cabs -- York audio comes to mind.
Also, dyna cabs will make it easy for me to share my tones with people, provided most of my presets before used commercial cabs.
I still like these cabs, don't get me wrong. But I can get pretty much equally good results for my taste (even if a bit different -- cannot exactly nail the nuances of some York IRs I've been using) by dialing in dyna cabs.