Bearings wear the the shape of the journal... if you machine or change the journal, then the wear surface on the bearing will have a high/low point etc. Not to mention the shells pick up impurities, they wear in pairs (so you have to make sure they stay in pairs)... at the end of the day, given the time and money you put into screwing an engine together...?
As stated above, why risk it for the sake of $100?
... if your really going to re-use them, rub the oil surface down with 2000 grit wet and dry and some light mineral oil, prepsol them and run a straight edge across the face (carefully). I've re-used bearings in engines before, but they went back where they came from and I didn't change the surface they were working on.
CHeers
Justin