seen it done that way but I prefer to use a cheetah bead blaster as a safer alternative. But since not everybody has a cheetah laying around ether works.
althugh cheetahs are good for more than just seating beads, they make for good pranks too. Buddy of mine at work borrowed one and put it in a refrigerator box full of packing peanuts. he tied a string to the valve and when his little bro opened it on christmas he released the valve.
Ive been known to blast a few people in the ass quite often myself.