I have one. I bought it from
http://www.copesdistributing.net/ a while back.
Fits nice. It's very comfortable and doesn't limit my motion a bit. It's got 360 degree coverage, including the neck flaps that flip up. I can actually wear my webgear vest on-top of it and maneuver pretty well. You might not like it if your claustrophobic though.
I don't really know what level of protection it provides.
If anybody want's to help split the cost of a replacement I would happily test mine at the range this weekend (maybe next) and create a report, and I'll get lots of pictures.
Might be good to know what this thing can do?