I was there most of the day and was very glad I went on Sunday, although seeing how the tents performed in a gale would have been interesting.
The Ikamper was huge and very light and airy inside, you could easily sleep 4 people and the quality seemed fine although the clips are pretty basic and uninspiring. The chap selling them had a Mk1 on his VW T6 and was open that the quality is constantly improving and much better in the Mk2. Clever design, but expensive and more geared to a family holiday than overland travel IMHO as you cannot place solar panels on the roof (double skinned fibreglass) and I'm not convinced it would cope well with seriously bad weather. The guy said it "should" be fine in winds up to 25-30 mph. I don't need that much space, but I do need something very solid that won't flap too much in a gale.
I think I will be buying a Bundutec Bundutop. Lots of space for 2 people, the most comfortable mattress at the show by far, solid aluminium hardshell already wired for solar panels, integrated LED and fan, 20 secs to set up or pack up and £600 cheaper. It has been tested to winds of 75 mph and there is lots of Youtube testimony as to how well it holds up to torrential rain and gale force winds. Really strong fabric as well and no flapping. Not cheap at £2795, but a really well proven tent.