I have to say both.
Sometimes a surprise is nice, sometimes it isn't. We all have things that turn us on or turn us off. If I'm getting the best striptease in the world and she turns around to show a bunch of tattoos and piercings, the effort is lost. Show me a tongue stud and I'm gone. It's not her fault. Right or wrong, that's just me. A couple of tasteful nudes avoids any awkwardness or wasting both persons time with questions.