Hi,
It seems weird that gas engineers etc working for a national arnt allowed to wear the overshoes as its against there health and safety rules, also electricians etc. . Derek, yours look like they are made of lego or something!!. The sweatiness of a bag on the feet could almost cause feet to mould I would have thought...
The very job we do on domestics I think clean workboots are ok,although I may look into the overshoes, commercial I'm not sure the overshoes are needed, although obviously add to the theatre of it all.
Cheers
Jen