well i say take both. i take both because my dojo offers both. you dont really need both to be a good swordsman though. kendo was toned down from kenjutsu for a lot of reasons( check a brief synopsis of the history of kendo on the home page) but kendo is not really swordsmanship. it is called the way of the sword but since you are aiming for less targets than it cannot be considered swordsmanship. but dont get me wrong kendo is excellent for developing accuracy in your attacks which also improves your iaido. so i say take both. both arts compliment each other.