Lets see, a little more then 3 years in tkd and I just recently started km. It’s working out really well so far, tkd Tuesday, Thursday, Friday and Saturday, km Monday, Wednesday and Sunday. It makes for a fun week. Just so you know, Mon, Wed and Sun are the only days they have km, if they had it more often I would take it more often. 🙂 So far it’s nice, I wouldn’t think about droping km or tkd just because of how different they are. Mind you in a real fight I would pretty much drop everything I learned in tkd just because it’s not really good to use in a real fight. But tkd and km are just so different I feel wrong droping one over the other.