OK, quit calling them "nutted axles" it's called a threaded axle.....what I was talking about is a "nutted skewer"....

this is a nutted skewer (or as nashbar calls them, bolt-on skewers) http://www.nashbar.com/profile_morei...ku=8197&brand=

I just don't see how anyone can get sued over this design...either the person tightening it done a good job, or not....and there's not enough protrusion to pose any risk that is greater than any other attatchment method.