My second time ever playing with her, I let my girlfriend have a lance of heavies led by a BNC-8S, while I took a slightly lighter lance overall - can't remember the specific composition though. It was her first time playing with full TW rules instead of just the Intro stuff, but she got the hang of TSM-juggling pretty quickly - it's pretty easy on the -8S, mind you, but still pretty impressive for a second-time player. The terrain was kind of tight, and she wound up backing my QKD-8K into a corner. I blew one of her arms off with an MRM salvo and thought I might have a chance to get some backup... and then she closed to point-blank, let me have one hell of a salvo from all those lasers, and proceeded to then cut my Quickdraw into sashimi by completely coring the center torso.
Hatchets are rule-of-cool, like IndyRI said. The Dice Gods favor the bold, and when you have a player who likes to get down and dirty, they make for a great combination. That said, I can't use them for crap, as they don't fit my play style, but I am wary of them in the right hands. And a Banshee's hands (both the 'Mech and my girlfriend) are definitely the right ones.