Gave my son an Outwell one for his birthday, as he's into instant results. Never thought I'd see a tent that takes longer to take down than put up - but it does! Actually there's a real knack to folding them up, as Gregory says - a real puzzle till you get the hang of it.
I'm impressed. It's only been used in the garden so far, but its certainly weatherproof. And if well guyed down, I think it would stand up to a reasonable amount of wind. Definitely valley use only, though.
The biggest penalty is in packed size and weight. You're not going to want to carry it far from your car - which is probably a good thing.