The both option was there because I shared a room while at a conference with this guy who had a shave, then a shower then another shave. But works for that as well I guess
I sometimes have a shave during, but the results are....um.....varied to say the least as I can't actually see what the bloody hell I'm doing!
Usually after, the shower softens the skin and makes for a smoother shave. After shaving I then use a face scrub with boiling hot water, then I put cold water on and moisturise. I do often wonder when it was that I grew a vagina...