WOw that looks really great! Is it a Tai-chi sword? Thats what I'm working with atm.
I'm constructing mine off a Wrist guard, Since it holds my wrist safely at an angle away from the blade when i flick it out. I have successfully made an mechanism that allows it to lock it in place, and slips back in with a tilt of my hand.
I think Assassins Creed 2 should become first Priority lol. Ezio's Outfit is alot more flambouyant, and alot more interesting to look at to be honest. But Its up to you i guess, if you want to do details like that ^^