In reply to Mr Trebus:
> Terra Nova / Extremities do one called the Terragaiter that I remember getting a good review, but never used them.
I've got them, but mine must be a good decade old now at least. They work well but have more toe creep than Yetis as I remember. I've never used mine massively but they were great at making my Nepal Extremes a bit more "expeditiony" on week long trips to Arctic Norway for ice climbing. I think by just keeping any snow out of the boots and less gloop building up on the laces etc. they make them a bit warmer even if they obviously add no underfoot insulation. Great in muddy UK too on your way up to the snow line, even if they seem to be completely uncool these days! Blame all the improved paths, so you're not knee deep in mud above the golf course on the way to then Ben anymore!