They look quite funky Rob - you used any
I got sent some of the Pike sized clear ones to try out. I tied a few different styles, bucktail, marabou, EP/Gliss n Glow and finally ostrich herl.
I will see if the chap I tied them for will send some photos.
What I really liked was that they were flexible, so no more trying to get the eye through a hole in a metal head thats too small! The also offer protection of the material without adding weight in the way epoxy does.
Not sure where in the UK you can get them though, I have emailed to ask them.
Also, did you see the "Trout system" nymph and shrimp skins...now they really do look good.