Crutch strap - standard double or moustache?

Hey guys,

I'm looking to order crutch straps for my Luke harnesses but I can't decide if I should go for the moustache buckle or just standard? Anybody with first hand experience of either?

Is this the bit that makes your 4 point harnesses 5/6 point?

If so, I wouldn't want anything to burst around the bollockular vicinity. Unless you a guard tucked in to protect your marbles. I'd go for the 6 point or the moustache? Lol

They are both to convert it to 6 point, but there are two different types of attachments and I'm wondering which one is better. I'll give corbeau (they make Luke harnesses) a ring tomorrow and see if they could suggest which of the two options would be better. I think you always risk bruising your bollocks if you crash with these but I'd take that over ending up wrapped around the pedals any day.