I have taken it for over 2yrs and have a red belt in it. i don't know of any other school in my area that teaches Hapkido. I like it a lot but i appreciate any form of martial arts.
I am going to agree with Mike. My Master has tweaked the original art form into his own style but it is still effective.
I would not consider it a sports art like your TKD, but more of a self-defence art. I am talking arm an leg joint locks, weapon techniques, throw, kick, hit, and nerve pressure techniques. My school is considered a combination martial arts school that combines HKD, Ssirum, Yudo (Korean Judo), Grappling and some Muay Thai.
Bones have been broken so be careful.