If Batch is in, then it's because Lefty got hurt. It's what happens when Batch then gets injured (after a few quarters) that I'm thinking about. The mobility skills of our 2 back ups makes the likelihood of needing a 3rd guy more than negligible, IMO.
Palko, Dixon ... Slash, Testaverde ... whoever ... I'm thinking that having someone else on the squad that can throw is probably a good idea.
Why not bring in Jeff George to throw bombs to Wally?