I mean, its a great idea, bit dont get me wrong. Iys just that many people dont run choice on this site. The only pokemon that run choice sometimes are:
Flygon
Jolteon
Heatran
And that is it really... :(
As for scizor, i would lead with scizor, but so many Swamp leads, and Special azelf leads its not eVen viable to do it anymore.
I have my own "Special Anti-Lead/Tank Lead!" :)