Like the argument between dvorak and qwerty keyboards, it doesn't really matter what you use. I am a carpentry in Canada and use both. Imperial when it comes to framing anything and metric when its time to form up concrete. I agree with the original post that things will probably sort themselves out eventually. Also I know dvorak is slightly faster and still don't care.
Please elaborate. Are you a carpentry, or are you the very idea of carpentry? Are you the God of Carpentry in Canada? Or merely some manner of carpentry elemental? As an Ontarian, I feel like this is something I should know.