I've been using the Lee Parks outseam-style DeerTour gloves.
Bought them at one of the bike shows and tried several pair on to find a pair that fit well (properly?).
Not so sure I buy could by gloves via mail-order to enure a proper fit from any manufacturer.
""I've fallen several times over the years and never put my palms on the ground. I'm not sure why "slideable" palms shows up as a positive factor. Outside-of-the-hand protection/slideability would make more sense to me.""
I haven't had this happen, but my nephew recently struck a deer with his bike, not wearing any gloves and one hand had road rash on the palm side, the other on the top side. Guess I'd like protection top & bottom if possible, but any is better than none.