Don't destroy them. Just send along both for the Swap.

I don't know that it really matters what material is used for a WW body.
I'm sitting on four shoeboxes of chenilles, so I don't think I'll need to look for a substitute anytime soon!

A size 14 Woolly Bugger? Isn't that called a Griffith's Gnat?

Doubt I'll make the Pleasanton show.
BTW, there's a tying expo in Redding in early April. I got an invite to tie, but don't have the time this spring.