Oh, I had one just last night, at Bannerskies, the fort I just frustration-quit today because of FPS death. One of my original marksdwarves lost a leg and an eye because he decided to quit his post and melee a troll (my fault; I forgot the 45° rule when building my towers). He got a crutch and hobbled around slowly, like dabbling crutch-walkers do, but he was just a marksdwarf, so mobility shouldn't have been a priority. I left him be.
A couple seasons later I noticed my archery targets were deserted. Curious, I checked out the squad, and found them doing an archery demonstration … led by old one-eye himself. I peeked at his stats DT and found he'd somehow worked his way up to high master teacher (or maybe he'd arrived with the skill; he was a migrant), and he was training the newbies I'd recruited to replace the losses sustained in the same siege that took his eye.
I got this great mental image of a crutch-walking one-legged dwarf with an eyepatch limping up and down the parade grounds outside my entrance with half a dozen former waxworkers and beekeepers sitting Indian-style around him, listing slightly to port and slurring a little, like Quint in Jaws. "Thing about a troll is he's got lifeless eyes. Black eyes. Like a doll's eyes. When he comes at ya, he doesn't even seem to be livin'. He just bites ya, and those black eyes roll over white, and then you hear that terrible screamin'."
And all the beekeepers and waxworkers look at each other sideways and wonder what the hell they've gotten themselves into.