some ppl must allready know, but i just post it since nearlly everyone i duel with this combo try to say i cant do it.......
basically this combo is easy, activate magical hat and choose 2 geartown from you deck, and what ever u opp atk it or not, at the end turn it will detroy and sent into graveyard, which u then able to use its eff to summon 2 ancient gear monster like ancient gear dragon....
http://yugioh.wikia.com/wiki/Card_Rulings:Magical_Hats
and this is the ruling of it...so dont say geartown eff is negate or it treat as monster or something like that....

i think think this combo is allowed

Actually I think it is. I don't think there's a ruling against it.