John,

Both pads have their merits, but I don't think a Mad Pad is going to replace your Sketch by any means. It's a little bigger, thicker, stiffer, and heavier than your Sketch, which is going to add some confidence on high problems, but definitely hang onto that Sketch for a more plush landing and for protecting odd terrain.

Happy trails!

This pad is a great upgrade from the sketch. You'll get way more protection and way less broken ankles with this thing. I agree with Hunter, the more pads you have the merrier!