Lol how do you do the kness with RB? I still do the knees on default with RT (Xbox) by sliding my finger off the tip of RT and immediately press K (B button for me) xD
I mapped H to RB as well as X. So I block with X, and I slide off of RB and press B when I need to knee (i.e. All the time) . It's essentially the same with doing it with H+K mapped to RT, but if I mess up I won't get the accidental H+K.
If you do mess up, you end up with a jab right? If that's true, then that sounds way better than the accidental H+K I always get when I mess up my knee.