Yep. I'm working on SRT. I have all the toys except the necessary friction device for coming down. I could just use my rescue-8, or a 'biner & munter, but those are no good to work off of.
I am unresolved as to all the varying toys; I don't want to do any changeovers, I don't want to spend a bunch of money for something I don't like, ...the list of excuses is rather long.
Right now, I think the new rope wrench looks simple, cheap, and safe. I'll bet that it functions quite nicely on drt too. Having one setup for both methods has a lot of appeal to me.
By the way, I got away from that "isolate the branch" problem a long time ago. Just tie your DRT rig to a friction saver, then raise the whole thing to your TIP with a second rope. I learned that trick here at AS.