I don't think Technician will see much use on Hitmontop from now on. Technitop has few viable coverage moves except Bullet Punch for Fairy types, and 2 of the most common ones - Azumarill and Mawile - take neutral damage from Bullet Punch, and have decent bulk. Then there's Togekiss, which has good bulk and will not take that much damage from a super effective Bullet Punch anyway, unless coming from Scizor.
Bullet Punch also doesn't receive STAB, so Scizor is a better Fairy counter. Hitmontop should switch out when facing a Fairy type anyway.