Tom, you can get them stateside. I bought a set a few months ago just to have them.
Contact Tony at tonydrews.com and he is now the seller for them. This part of the Uncle Jack/Joe Alexander/Tony contingency.
I can't tell you much about them since I just put them in storage when they came. They did cost $69.95 and were pretty solid looking. These are for the TR6, by the way.