A very old thread that likely has been settled one way or another but I'll just add a little more. First, HKD was based and derived from aikido and Daito Ryu akijiujutsu. Due to strained relations between Japan and Korea teaching a Japanese art was frowned on. So after a few other names were cast aside it eventually became HKD. Being a legitimate Korean MA it was imbued with lots of kicks.
Depending on the background and experience of a sensei HKD can be taught more as judo, TKD, etc. The kicking/striking in HKD is fundamentally different from TKD and Karate. The art itself is, and should, be much closer to jujitsu than even aikido. The philosophy of HKD differs as well. IMHO, HKD is a better "fighting" art than, say, TKD because it seems to be an art more easily mastered than TKD. One doesn't have to be super athletic to learn HKD.