Many ITF (my friend is an instructot at one) and ATA TKD schools are now offering "Korean sword training". The sword they train with is a Katana and the techniques they use look a lot like Kendo. I was under the impression that traditionally Korea used swords similiar to the Chinese, like the Jian and Dao. I would imagine that that Korean swordsmanship would look more like Chinese, than Japanese swordplay. Please explain.