Yes I do have an outdoor one and my mate (I do have some!) has an indoor one for his MG. Very good valve for money and their after sales service is also excelent.

My mate’s zip went when it was out of warranty and they replaced it for just the cost of the postage. I've put a small rip in the outer skin of one of the side panels in mine, caught on the brick wall, and the quote to replace a complete side is just £50.