Hmm. I wonder, then, where iaido fits in - all of the kata I've watched (and the one kata I've tried) in iaido start with a sword drawn from seiza...
While there are forms of Iaido/Batto Ho which indeed start from suwariwaza there are also forms which start from standing eg Munen Shinden Ryu. cheers, Joe.P
Ps Mike Flynn 6th Dan Shihan has produced an excellent set of dvds on Iaido. Anyone doing this discipline will be pleased by the content and standard of the waza being shown therein.