After spending the 6 dollars on a tube cutter at Ace, I will now laugh at anyone that hacksaws bars. When i did my flip/chops on my Peugeot, it took me like 25 minutes of sawing and struggling to find a set a clamps that would hold the bar sufficiently.
The tube cutter on my aluminum MTB bars took all of 3 minutes of easy carefree spinning.
Totally worth it.