"A built in clamp....... Minimal failure points and foo. How does it stack up?"
Pay attention Neuro, an engineer is talking about "minimal failure points." That means this is BETTER than your combination of pieces loctited together creating multiple failure points that you believe is even stronger.
The Kirk Security Strap wasn't part of that discussion. My original point was that the BR lug Loctite'd to an AS-type clamp was more secure than the BR lug directly screwed onto a camera/lens attachment point, and I stand by that point. Yes, it's one more connection, technically, but the Loctite doesn't count as a practical
possible point of failure. In that comparison, the parts of the BR hardware - carabiner, pin, etc. - are identical between the two setups, and the sole difference is the directly screwed in lug vs. the clamp in between. Since unscrewing of the lug which is subjected to torsional stress during use is a much more likely occurrence than unscrewing of a Loctite connection or a clamp screw not subjected to torsional stress, the latter is more secure (despite having one more 'countable' potential failure point). My own empirical evidence backs that up.
By the way, a good
engineer would understand that it's not only the number
of possible failure points that matters, but each points' probability of failure. If an engineer working on a project of mine (I do hire them, on occasion) told me that three connection points each with a 0.0000001 failure rate is 'less secure' than one connection point with a 0.001 failure rate because fewer possible failure points automatically means more secure, I'd certainly 'pay attention' - and I'd immediately fire that engineer.
The Kirk Security Strap clearly is an even more secure setup. There's no carabiner, no pin, etc., so of course it's more secure. I'm a bit concerned about the idea of using the screw as a 'stand off' from the body, as that would seem to carry the risk if the screw know being loosened as it rubs. Not sure if that's a real issue, in practice - but it's something I'd watch for (and just switching the orientation would solve the problem).
The other issue is convenience - not sure if there are tradeoffs there with the Kirk strap. The issue of a lens plate was mentioned - the BR swivel allows 90-deg rotation for body vs. lens plate, not sure it the twist of the Kirk strap would be an issue (likely not). Also, my BR strap works in conjunction with a backpack (a full pack - shoulder straps with sternum strap, and a hip belt), because the strap does not need to move/slide to raise the camera.
FunPhotons - thanks (again!) for the great review. I'd love to hear your thoughts on lens plate use and backpack compatibility.