I would rather take the strap and case off my Rolleiflex, put them away for safe keeping and use new, storebought stuff for daily use.
That way, I get to use the camera and keep the vintage tack in good condition.

It is possible to get cases for the Rollei made from modern materials?
It'd be neat to have a case made from something like Neoprene and a strap made of heavy guage Nylon.