Not on this occasion, no. But I've seen 357 SIG tested several times and reviewed a lot of data. It's as you say, a "9mm on steroids". It barks pretty hard in closed spaces, it's very accurate, and its terminal effects reputation is at least as good as that of the other service calibers.
Again: I've done training with a lot of agencies/departments, and I've used just about all the calibers & guns in training that they all use. I would have no problem carrying on duty any SIG, Glock, HK, or S&W M&P handgun in any of the standard service calibers.
