Cool, nice to see. Don't think both ends would have a shallow indentation for a walking stick.
Casters might make sense for a light object, a heavy load would cause it to fail/fracture...Drilling after the glass being molten could cause chipping, which I think I see in the pics...centering a drill bit on a rough pontil wouldn't be easy.
I'll go with an old school razor straightener or something.
C'mon dude, if these were at the "bottom of the box" what did the rest look like?