I found it was fine to brush over and over with no problems, well up until it was close to setting/going off. I particularly focused on brushing and rebrushing (after re dipping the brush in KBS) areas that had cupped inserts repetitively with no problems.
With the KBS application I tried foam roller first with only avg results and then subsequent coats with a brush which was good.
After reading a couple of your resto threads I said to my wife last night maybe I should have given the foam brush a try too. There was the odd spot where it was hard to get the clear to take. Maybe it was because the surface wasn't clean or something, but I really had to look hard on a side angle on subsequent coats to see where the clear had missed tiny bits, then focus on it with the brush to cover it. It worked, but maybe a foam brush may have been more encompassing/ less chance for the bristles to skip over??
Either way your resto finishes look like they have been great to date.
