Reminds me of another game where people tried to pick the pet class but actually skipped the powers that gave you the pets...
Yes it is probably doable but you are essentially just experiencing what it is like to be a poor player and WILL be a burden on teams. You might get in top 3 but that just means you would have been easily top if you had the full set of powers.
That my be treu what your saying it's totaly useless to do.....but as i already posted it's a great way to learn your basics something that wil keep you alive in pvp or pve!
Also i have the other 2 classes and i can say for Sure i am doing pvp a lot better with a non-adv class that with one