by Swindon_Ed » 11 May 2012, 10:57
I've never used one but from what i understand they're made from quite thin metal, something like 1.5mm so keeping stable temp's could require a bit of work in changeable or cold weather. But i belive they're welded together quite well so they'll be better than some of the el cheapo offset's that you see on ebay.
All that being said they do look kind of cool, so if it's at the right price i'd have a punt on it.