My partner likes to give them, but it more foreplay for us. When we first started, she was enthusiastic, but not exceptional... sort of middle of the road skill-wise. If I say so myself, she is outstanding now
She likes to swallow but doesn't most of the time. If we are on the road or she is just in the mood to make me cum quickly, she will do it. Otherwise, in her words, she thinks it is a waste to finish me off with a blowjob.
Gnome posted that his did in the past but changed her opinion and thought it was dirty/sl*tty. My partner is younger, and I honestly think she puts a blowjob and handjob on about the same level. I resist the urge to argue differently!