I'm still waiting for mine also. But they did say that it would take 2- 3 weeks due to shipping.
littlereaper's forum posts
You shouldn't dismiss the Back Scratcher it's a good melee weapon. Also this is not bad when you use it
"As an interesting bonus, the rate at which a Medic's ÜberCharge is filled is not slowed, allowing heavily-injured Pyros to greatly build up an ÜberCharge"