They might SAY they would but I had a "one under" a few years ago and my driver was off work two weeks and still wasn't 100% when he came back. When he did come back he had a SPAD on a bit of line notorious for wheelslip and the TOC did him for it.
permission to call the toc nasty names? The last thing you would want after that would be dismissal/disciplinary, and on a tricky bit of track too.
and surely the hearing trains for miles thing could just be prooved by the 'ring' you hear when a train is aproaching. and how i can hear a pacer flange squeel from almost the other side of lincoln