The quote is a mixed Biblical/Vietnam Era passage, the US Grunts frequently wrote it on their Helmet Covers, we Aussies didn't use Helmets so we Tattooed it on our foreheads.
Its funny because its true
As for the BR straps, as others have said if someone was getting that close to your back with a Stanley knife (or Box Cutter if your American) i would be worried about losing my kidneys, let alone my camera.
I'm also looking at a BR strap, but am confused by statements on their website. I want to keep my Induro Arca Swiss plates mounted to my camera/lenses, so I can pop them off the BR strap and attach them to my ballhead at a moments notice, but it says the FastenR Tripod (FR-T1) will only work with the Manfrotto RC2 Quick Release Plate. From your description, quoted above, I'm unclear as to what you found that works. Thanks.
What you will find is that as long as the plate is similar thickness.
The screws are similar that mount on the underside. The FR-T1 will be the exact same thing but possibly better build than the cheap knock offs you can buy from ebay.
And speaking of copies i found this for $15AUD on eBay. Not sure if i would trust it to hold 1 let alone 2 cameras compared to my RS4 but if you wanted to check out and see it it suited your needs without paying for a decent strap i guess it couldn't hurt..