"It certainly makes a change from the usual 'pre-wedding decisions'...flowers or balloons, top hats or none, branding or no branding "

ROFL lucy!

To me liquid nitrogen has not got the same BDSM appeal as a red hot piece of metal to mark skin with, it's a bit too 'doctor' for me. If a brand left a nice neat, well demarcated mark like a tattoo I think I'd find that more appealling too. If it were me, I think I'd go for the tattoo. I'm very interested in any more info anyone digs up on real branding though.