I only shoot part-time, but here's what I do.
For senior portraits, I'll have them give me some input prior to shooting if they have any particular type of photos in mind. We're already talking about wardrobe and location, so it's a whole "what's your style?" kind of thing for me to get to know them and what they're looking for. Once the shoot is done, I'll tweak my editing to what fits their style, but I'm not giving them images and asking how they'd like me to process them afterward. If they ask for something special, I'll try to accommodate it, but I try to get any requests like that out of the way beforehand so I'm not going back and wasting time re-editing images.
My only real exception to this is for weddings where someone wants a particular shot in black and white. I'll go back and run a few shots through Silver EFex Pro, since that's fast and easy.