Yep, you nailed it. Exception to this rule is superstars like Bonamassa.. but a) you never know if he is b) he just tries things because he can.BTW Kemper has killed the last 5% of tweaker/tone chaser I had in me. Not that I am satisfied with my playing.. but I can't remember spending more than 5 minutes setting up "my tone", but I do remember to practice every day (practice, not noddle in headphones in front of TV) to have better chances of not sounding like shit. Tube amp or not.
It's worth to have tube amp just to have fun with profiling. It's really eye opening process.