I think the silence indicates the main problem you'll have with them – not many people buy them new so you'll have pretty slim pickings second hand. They're in that funny bit smaller than a transit size/falls in between catagories catagory. Too big to be carlike too small to be a proper builders van. Thing with vans is you want to have a lot to choose from to find a good one, because they've been used/treated like vans – driven by people who didn't pay for them.
No direct experience of them but I've never seen one in crew cab guise. Their reputation is for being tough, though not as tough as the old forward control models.
If you are looking for that 5 seater van thing then aside from VW (which are expensive second hand because they have more non-trader buyers looking for them as surf wagons than tradesmen selling them new), renaults are the ones I see most commonly in that guise, and there are more of them on the road generally to chose from.