As far as the condom failures go, they have happened twice with CSW
supplied condoms (I know not which brand) and once with ones I supplied, Trojan Magnums. I tend to have very vigorous intercourse with CSW's and that is what I attribute the breakage to. I am careful to never cause injury to my CSW partners, several of whom are regulars, and I never use any oil based lubricants. The only lube I use with a CSW is AstroGlide that I bring to the appointment so I know where it's been.