I have used the WNW numerous times now and they go on beautifully and suck down to a painted surface very well. But I still like to use Mr Mark Softer or similar to get them really tight. You may find the the slightly pebbly texture of the WNW kits may give you the fabric effect you want, but don't forget you are looking at a 1/32 aircraft and any fabric viewed from scale distances would show no sign of fabric effect IMHO.
Great review James. May give the Pheon ones a try as well. I used their decals with my disaster struck SPAD VII and they went on well but did have a slight tendency to tear when pulled which WNW ones just shrug off. Just need to be a bit more careful is all.