Well, some of us find KSG very *easy* to use but yeah, others have different experiences. Seems like one of those things that people just have to try for themselves.
The last coat of KSG on my MPV's black trim is over a year old and it still exhibits tight beading (and no, I don't QD it). I know beading isn't the last word in longevity, but I also know how it looks when it needs redone and it does *not* need redone yet. IIRC I've only done it three times since new in 2002- each time I cleaned with AIO, four-six layers of KSG, then just washes until it doesn't bead/look the same.