go ahead
Why not? We have to have fun sometimes. Through the years I have tried all kinds of whacky things from radioshack. Recording acoustics through lapel mics, using pzm boundary mics mounted on plexiglass for drum overheads, and my favorite, I once put a 20 year old radioshack highball mic at one end of a long empty room and had my drummer sit at the other end and record various grooves - these made great loops for thrash/trash.
For me its all about having fun. Don't get me wrong, I would rather you buy one used sm57 than two new radioshack mics, but sometimes it pays to experiment.
BTW, I haven't posted for awhile and my registration stuff must have expired. Geez, I've been kind of busy finishing med school and this is the cold reception I get. Just kidding. Its good to browse through and see the old names again.