I've use 57's as overheads in plenty of situations with decent results.
Did a live jazz recording the other week with a single 57 as an overhead, actually turned out pretty well. Sure there are plenty of mics out there that would do a better job, but for a low cost mic, the 57 does an admirable job.
Dust. Wind. Dude.
Progs - Reason 7, Live 8
Synths - Minibrute, MoKeys, Prophet 08
Drums - Korg EMX1, MaM ADX1
Guitars - LTD EC100, Hohner L75 Pro, Yamaha RBX375, Custom Upright Bass
Effects - Blackstar HT Dual, Aphex Acoustic Xciter, TCE Flashback, Red Witch Ivy, VFE Blueprint, MI Audio Tubezone, Boss ODB3, SPX 990