ah, kev rolled again!
There's no official tutorial for it but you can prolly figure it out if you play around with the idea a bit. Basically make a smear fan normally with about half the deck, then use the finger clipping your 1st fan, and use your remaining fingers to smear that 2nd one. looks hard to do evenly, I sure can't.
I dont think theres a "proper name" either, two fans in one hand sound about right to me
HERE is the tutorial for an alternate version you can also have fun with:
http://www.youtube.com/watch?v=F4i7y_Vllwg