in my actual experience that little single arch canopy is a bit naff...i had one like it...it flopped about all over was too low to stand under and was just a menace... i still use the origional jk one 2m square...NOT the 2m by 3.5m one they do now....they collapse, i have actual experience of that too. i have one... the 2m square one is by far the best...i even can compare it with a fiamma sunstore type that comes in the zip up bag that has telescopic legs ect....just not tall enough...but is rigid. bit of a half glass full about it , but ive been there and done it over 20 years of type 2 camping... http://www.ebay.co.uk/itm/Blue-Sun-Canopy-4-VW-camper-vans-classic-vehicle-gutter-awning-channel-/150666124800?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D21%26pmod%3D280738253480%26ps%3D54 even this would be better than the single arch canopy....sorry
That looks like a nice site - wheres that? Brum- twin slider Dormy - that looks fantastic - I want one - love Dormy roofs!