SP has made some doubleshot PBT caps, but no full sets AFAIK. This is the second round of Vortex doubleshot PBT caps and I suspect they went with an easier to make, thin font for the first set so they could test out the process.
I remember reading somewhere here on GH (it's on the internet so it must be true) that they mix ABS with the PBT to make it more manageable, but don't quote me on that. I'd be interested to know the density of these caps. That way we could confirm if they're pure PBT or a blend. Either way, I think they pretty cool, if only the colors were a little more clear. I may still order an orange set, if I can find some here in EU...
So.... again, anyone know of a European vendor for Vortex / KBT / iKBC?