The story I'm writing currently (Yeah, and putting up parts at midnight on Friday. I never seem good at the 'best times to post fic' rules) is using the 'Mirror, Mirror' ploy from Star Trek. Do you know how tempting it is to go with the convention of having at least one on the 'mirror' versions sport a goatee? I've resisted, but damn, I was this close to giving 'mirror' Methos one. And last night, Kronos almost became my victim. Maybe if I do a flashback to 'mirror' Duncan, he can get the facial hair.