I was wondering if there is any way to get ahold of a trackball like the one in the uConsole?
Yes, from the photos is black so probably they used EVQWJN007, which is compatible with the Devterm too, I changed the stock one from the Devterm to the EVQWJN007.
I got mine from Aliexpress
Interesting, is this one much better than the DevTerm one?
Feels better, the DevTerm one is a plastic ball and a bit loose. While that one has a rubberized feel and its tighter, the ball isn’t as free in the socket as the original one.