@Nate it's the first time I've used coffee on ribs but I have used it in a rub for rib eyes and melted a little blue cheese on top.... Give that a try. Buckie's post from McCormick's is a good place to start and there are quite a few variations if you google search coffee rub.
I had the idea to put it in the rib rub basically because it was a little too sweet when I tasted it and I wasn't sure what else to add. I didn't really want to venture towards Mexican flavor (chili powders, cumin, coriander - coffee does pair well with those too) because I use them all the time and it didn't need more salt or pepper. The coffee gives it a really full and rounded out flavor but you don't really taste it.
These were bite off the bone, but not falling off. I also didn't bother trimming them except removing the membrane on the bottom side. I think that's ok for family ribs at home!