Hey there!
I don't own a controller - I just use the mouse and keyboard. You see the stickers on the extremities of the keyboard? That's the volume up and down for each deck on Traktor. The buttons next to those also control the bass for each deck and that's it - very basic but ensures smooth blends

Yeah I could mix using the Urei but I like to control the bass for each track during the mix and preferred to keep my hands in the one position. With the 1210's in place I just mixed normally through the Urei. We had some non dj friends over who can't beat match so traktor was their only option for the night
