If your goal is to hone your piloting skills with the least expense, then there is nothing wrong with purchasing a Phantom 2 for practice. It is a less complicated bird to fly, cost less to purchase (I bought mine for $230 new, without a gimbal), and less expensive to fix in case of a crash (without the gimbal). Once your skills have improved, and you want to spend the extra bucks on a more sophisticated bird, at least you didn't have to deal with the expense of gimbal replacements. Especially since to replace a broken camera can cost as much or more than the Phantom 2 itself.
Once I improved my piloting skills and worked out the piloting errors that led to early fly aways and crashes using the P2, I moved up to P3s, P4s, and Typhoon Hs. However, I am glad I started out with a less expensive option during my beginning stage.