From what I have seen, all servers have rp people, and tend to be okay with ic play, even if some do not actively participate. Though I have never had personal problems, I know Freedom has had those that are anti-rp, anti-ic. Feel them out. It really depends on what you are looking for. I like to get onto the less used servers at times, usually with my wife, and we just rp and stay pretty much ic the whole time. My suggestion is to build yourself a friend base.
I have a character I want to play on an always IC basis. The obvious server would be Virtue, but the name I want isn't available there and in this case the name isn't flexible. What other servers might be good for this?