This type I don't like, because if you lose the stupid key lever, or just don't have it with you, you're screwed. Same with Pitlocks, although I have at least some faith that Pitlocks, as a company, would be responsive to a call for urgent help.

Whatever the case may be, I'd be awfully pissed to be inconvenienced at all when wanting to remove my wheels or seat, so like I said, I just don't want to risk it with a system that requires a special tool that's easily misplaced or fumbled and dropped down a sewer grate or something.