They had them on a mechanical display at a speed supposed to simulate arrow flight (it was kind of like a wind tunnel effect). They were no noisier than the full helical fletched feathers spinning next to it, and it was spinning MUCH faster than the feather equipped arrow.

They are soft like an AAE or Duravane, so durability will probably be about the same. [:'(]

I'll try 'em. But I think the price point will be highly detrimental to their sales numbers. Guys aren't going to spend 40 bucks for a 100 pack.

And GV, you are pretty much on target according to what the NAP engineer was telling me.