You should really play it for yourself. It is a different style of RP from the City server. Depends on what you like.
Overall the Outlands in my opinion is about freedom and wide open terrain. There are a lot of peculiar characters like Vortigaunt scientists, traveling traders, and even cannibals. It's a dangerous place with very little authority. There are some members of a coalition that protects people in the Outlands. A lot of people carry weapons on them as well. You can apply for a variety of auths that would never be accepted on the City server like peg legs, bows with arrows in them, craftable knifes (with the proper level of RP involved that is) and a lot more.
Outlands is different in that it isn't constricted, which can be good or bad. The world's open though and the RP is player-group based rather than faction based.