A. Vomit f.b.s have gone the other end of a nerf cliff--a single bolt from a marksdwarf or bite from a kitten will break them into pieces (same goes for salt, fire etc--except fire will explode and melt nearby dwarves)
B. Nobles are fun! Make sure he/she has the best rooms in the fort (tentatively for now, but make a mini-megaproject out of it if you can gem windows, artifact furniture, etc). A good place for a noble is an inactive marksdwarf squad (give him a personal training target). In a few years he/she will be able to take care of any threats to personal safety in style.
Good idea, I think that I'll do that, except after I get my actual military up to snuff and get them a steady supply of bolts, they may have actually killed something now, but they still couldn't take on a proper enemy, arena almost finished on a related note.
Thanks for the info on the vomit-beast too, if only the same was true for the bloody pondgrabber...