I agree. iTTL is nice for most macro shots, but M for W/A is generally the best. Not having a built in flash would present a problem.
Am I reading things correctly here that it is assumed that I'm going for iTTL just because I want a hard wired strobe? nope, no way... all manual. Simply... optical strobes are not an option in my application or according to my preference. Lots of experience with both and optical just doesn't cut it for me for a variety of reasons, none of which include my ability or skill at using manual strobe or camera settings.
@derway: if panasonic has hotshoe, why doesn't anyone make a housing with a strobe port/hotshoe adapter?