If you're too low, your pegs will drag on the ground easier... That is if you're not afraid to pitch it right on its side... Tony got that on his 800 and I think 2" is still ok but personnally, I won't do it. I already think my pegs do drag too much when I do my turns... seen my last video ?
If there's something I'd do is have a set of really really far back pegs so I can pull wheelies like the sledders do. Our position, even with the MTN peg bracket I have on mine doesn't allow to get a fully extended forward climbing position. Could be fixed by putting a bracket that puts the handlebar more forward like J&L did on his 600. I'm thinking about a second set of pegs that would end up right in the middle of the number plates... But it would be kind of dangerous to have that "sharp" thing sticking out, if your leg get caught on that you may end up with serious injury... Or maybe go with a hinged foot plate rest... But that would drag even more...
That's another project ...