So, controller support is overall superior for my Paladin at least. One press skills, auto sort for inventory, able to use potions with the press of a button whether they are in your belt or in inventory, and using analog stick to move and dodge around just feels better. Being able to do a normal attack at the press of a button when a normal enemy does not require my sacrifice skill is awesome. Also, pressing Y to immediately switch to my bow feels better than finding a certain key on the keyboard. When I want more precise controls for inventory, I just grab my mouse. Best of both worlds.
Edit: Also, being able to walk or run with the analog stick instead of toggling or holding cntrl is nice. For people who don't know, as a melee character you want to walk when in proximity of attacks since when you run, your defense drops to zero.