Quoteanyway doesn't matter where the sound is coming out
which counts is that it sound good
Yes, and it's great to have options. The Kemper with a power amp installed offers tons of flexible routing so you can always choose the best approach for the situation you're in.
I find that I prefer FR in some situations, e.g. when I'm sitting at home working on solo material, mixing in synths, and experimenting with techy stuff; and I prefer a guitar cab if I'm just playing rock and roll with a band. And that makes sense: traditional tools for a traditional job. If I pick the wrong speaker type for whichever environment, listening fatigue soon follows.