I think I finally have to give in and my this dremel:
Dremel 7300-N/5 4.8V MiniMite Cordless Rotary Tool
I don't know if Mojo was traumatized by some nail clipping experience that I am unaware of somehow, but he will literally scream when we try to clip his nails. He screams when the vet tech does it, too. I can play with his toes all I want, but as soon as the clippers come out, he bolts. I actually think I'm going to go buy this today. Wish me luck!