i tried spinewhacking my 440v millie on the steering wheel of the car at work, and it failed, i dont trust liner locks anymore and all my liner locking spydies have been retired (they live in a nice glass cabinet along with the rest of my spydies)
never had a backlock, balllock or comp lock fail a spinewhack (guess what i carry now)
never had a backlock, balllock or comp lock fail a spinewhack (guess what i carry now)