I actually did one of my Marshall's the other day for the first time before the upgrade. I had left everything setup as is (out of pure laziness). Today I re-ran the process again today. I was surprised how much more depth and bottom end was captured without hurting the top end. It was very obvious difference (in a positive way).
It should definitely help bridge the gap of setting presets up at "home" virtually vs. having to go work with the real cabinet in the studio to tweak my live setup. Being I use a real power amp and guitar cabinet live. So in theory it's like simulating my live rig.
I can't wait get back to the studio and prove it out, but my preliminary test at home has been promising. The real test is always with the full band, it's a very different dynamic (as most of you know). I can't really open the amp up in my apartment. I just can't do that to most of my neighbors, even thou there are some that should be punished (but that's another story...).