I don't own one anymore, BUT the Korg has 5 (or mebbe 6) different drum maps available on any style, so at the touch of a button you can change the entire drum map.

Now this is the part I cannot remember fully, BUT I think you can set an assignable switch, or a footswitch to change the drum map on the fly??? although I really cannot remember, I used to just change a drum map and save it to a user slot, without worrying about changing it live.

So, you could setup 2 drum maps (editable) for a style..1 being the normal and the 2 being the same kit, but with all the velocities upped by say 8 or 10...

Dennis