I switched to toothy all metal footpegs on my KLR largely because of the Common Wisdom being parroted everywhere about the stock pegs being "slippery" or "inadequate." Honestly, I never found the stock pegs to be a problem.
I do like that the aftermarket metal pegs I have now don't have a rubber thingy on them that I have to worry about wearing out. But just bear in mind that aftermarket pegs will surely have a slightly different height than your stock ones which will inevitably involve dicking with your shifter and rear brake pedal height which is an extra layer of annoyance.