I got the chance to try out my Necksgen a few weeks ago at VIR. No problem at all putting it on - although I find it easier to put everything on after I'm in the car, just as Jeff described - and once I was on track I never knew it was there. I did also have a bruise on one shoulder - no pain or soreness, just a bruise. No worse than a day at the shooting range to be sure.

I also didn't get a chance to test it in action - I'll try harder next time I promise - but expect it would work as well as any of the others. Overall I'm happy with it, would certainly recommend it, although I would still go back to my ISAAC in a minute if given the option.