I've used reground roller cams in GM LS engines and haven't had any issues. Haven't done one in several years, but there was a guy on ebay selling factory cams that were reground into a copy of the GM "hot cam" and some other grinds.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax