As THF75 I've been messing around capping HTH, and read up about these 4 Kick attack bonus shoes, and how there was some question as to if they gave kick attacks or not. I then tried camping for Kung Fu, which didn't go well, but later one of my Monk friends said they had a pair I could test out.
As 75THF/MNK, using HTH and wearing Kung Fu's, I spent a good hour or so smacking things outside Rabao, and no, I never once saw any Kick Attacks, other than the ones included in weaponskills of course.
So, either they don't give the kick attack ability or its so low I didn't see it in an hour. My theory is, (because my friend says he does kick attack more with these on) is that these do increase your kick attack dmg and rate but only if you already have the ability.
I can't assume that Kung Fu, Wulong, Wulong+1 and Dune all behave the same, but just posting the info about these so if anyone was wondering like I was when I looked up these.
Coming up, testing with Strike Subligar, whenever I can obtain them.