I have them. Kept the tools on-board for a month, convinced I was going to drag peg feelers constantly and might have to take them off. I've never taken them off, and recently bought passenger peg lowering brackets and can guards, I've been so pleased with the rider brackets.
I lowered the shifter and the brake lever slightly. Both are easily adjusted. You can do both in 5 minutes. Zero problems, for me, utilizing shifter and brake pedal. Difference in ergonomics, for me, is huge. I have rather muscular legs, and with the stock pegs, my calf muscles were always jammed against my thigh. No such problem any more. I drag feelers occasionally, but not often, and I pretty much know when I'm laying down enough to expect it.
I'd buy them if I were you. If you don't like them, sell them. This is one where initial outlay is small enough, and the potential comfort gain is big enough, that I recommend you try them out. Buy DFS's.