Hi Si! Just a few comments: In the style I practice (Nishio ryu) the three 'mountains' of jodo, iaido and aikido has been gathered into one. The jo and bokken are integral parts of our aikido-practice including paired jo vs. bokken and bokken vs. bokken techniques. On top of this we also do iaido. First and foremost the type caled Aiki-toho but also some of the 'old-school' iaido katas. We are STRONGLY recommende to pracitce to-ho/iaido though it is not mandatory.

It seems to work quite well....