I've used obenaufs on it because I feel like It absorbs easier. The leather soaked up the wax 10000000 times quicker than the upper. Made me feel like it needed some protecting.
Sno seal was much more slick the one time I tried it. It was slick on dry pavement in the warm.
Obenaufs has been fine so far. I'm sure it makes it more slick the first 1-2 times you wear them. Worth it to me if it protects the leather and stitching.
I always assumed that Sno Seal would make my soles slipperier. Tried it this winter anyway, and much to my surprise traction has greatly improved!
No experience with Obenauf's, but anybody who's used SnoSeal before knows that it's actually quite sticky-tacky rather than greasy-slippery.