I don't have any real tube amps at present. I do have a Matrix GT1600FX and a Port City 2x12 OS Vertical with a Scumback M75/H75 combo. I've got a couple of questions around using the Kemper with an amp/cab approach vs. FRFR. 90+% of the time, I will use FRFR to play live. There may be occasion though on bigger stages or outdoors where I can wind up an amp. I was pondering the purchase of an OR50 just to have an amp (and profile it although not sure where do to loudness). Then it occurred to me that perhaps Kemper direct profiles into my Matrix/Port City would be pretty close. I've tested a bit with some MBritt merged profiles and some direct profiles from the community. It seems very promising with some but without an A/B, I'm not 100% sure.
The other factor...if I wanted to make a direct profile of an amp, is the profiling method such that the best results will come from using the direct profile with cab I profiled it with or does the direct method truly separate the amp from the cab?