Honestly, I haven't gotten much in the way of direct feedback. Most of the time, it's just:
"It was nice to meet you, good luck with the rest of interview season."
or
"Feel free to contact me if you have any more questions."
I had one guy that did tell me that I would get ranked highly if the "rest of my interviews went well" - which was nice to hear... but you have to take that stuff with a grain of salt.
I really don't think you'll get a "vibe" most of the time. Programs that want to let you know that you're a big deal will probably call/e-mail right before ranks go out. But, honestly, most probably won't say anything.