I also thought that the roster space is an issue in this context. In the 60s, rosters were smaller (46 if I remember correctly?) and made larger because of the FG and punting positions (was this pre-merger?). I am not sure if the LS was then, as well. I would think a center could handle the job (preferably a back up), but if injury did strike.....sol.
Gogo!Gogolak!!, I remember this cheer from my childhood,