Skid I got the BMW-Gilles pegs on my GS and if you go hard it is easy to grind the little plastic sliders on the sides.The silver HP BMW Gilles-pegs can be set a little higher but eventually around 52 degree lean they will make ground contact too...All no problem with good tires like CTA3 or PST2...And I cant imagine doing a trackday where you go even faster and putting on the Metzeler M9RR which are very good tires and will be available in GS sizes later this spring...That is why I hope that BMW makes this conversion with a little more ground clearance like 30 mm plus and correct rake for the necessary stability like Wilbers did with their Boxercup Kit for the R Nine T Racers...And of course more HP that you wont get passed as easy on longer straights 
Time will tell what the M 1300 GS moniker will mean !
Time will tell what the M 1300 GS moniker will mean !