... Tenn Protean waterproof shorts?

They're less than £20 on ebay and don't look that bad.

http://www.ebay.co.uk/itm/Tenn-Protean- ... 2343fc15ef

The thread title made me reluctant to see what you were on about

Not tried them but at less than a score, I figure they're worth a punt so I've ordered a pair to try out...

Arrived today and first impressions are that they are worth about what I paid. No reinforced seams, especially around the crotch area. Slim cut on the thighs as well although waist size seems correct.

I'll give them a go to see how they hold up.