You can cut it with strong scissors and some effort, a very strong and sharp object can pierce it, if it absorbs a lot of thermal energy it will melt, dump enough KE into it and it will permanently deform.
If you dumped enough energy into it you could tear it. Can't imagine how you would pull that off under water and survive. I'm thinking that anything that will damage the wing under water will also severely damage the user.
I think that anything that will go through the nylon bladder will also go through any covering on the bladder.
The major vector for damage seems to be improper storage. If you crimp the bladder for a long time it will fail and then the wing will be junk. The bladder will probably oxidize after a couple of years and the wing will be junk then as well.
Replacement bladders for wings seem to run around $140. The additional $120 for a complete replacement that will most probably never be used isn't so bad.
That being said, I'll be at DEMA and I'll check out the "Meow".
Peter
PS. Notice that in my previous post that my Pioneer has already been up against a sharp wreck and suffered no damage. It has few rust stains here and there; I hate those.
PSS. Patrick did disprove my "not anytime soon" comment. Sort of cool, really.
PSSS. Halcyon's manual page 16 lists the things not to do to your wing.
http://www.halcyon.net/manuals/halcyon_MC2003_web.pdf