That's the button layout I used to...use...on the Cyberlead which was my exclusive cab for the AW. It's a good button layout, I mean if you want to lay your fingers on the fist four and then use your pinky to alternate between D and E when it's called for. It works well, but having all buttons at the ready of your fingertips is way more intuitive.
K S HS
P x D
That's my Isuka layout, however I've seen folks use all 5 fingers on this button layout, with the thumb on A/P and the pinky on E/D
Just my 2 cents.