Internet, look how much of a col-badass I am opinion: He He, you'd be better off throwing the thing at the bad guy I reckon! YE HAW!
Real life opinion: I don't have the pistol, but I have the carbine, and they are actually quite similar. If you teardown the carbine you get something very similar to a pistol with a long barrel. I have about 1,000 rounds through it and no major problems. The only 2 problems I have had, and I don't know if they apply to the pistols, are that takedown is a pain. A complete pain. Number 2 is that sometimes a round won't get stripped off a new mag and the slide has to be racked twice. Other than that experience with the carbines and seeing videos like Iraqveteran8888's on Youtube, I would say the .40 will do you well for cheap.