SuStel:
I don't remember seeing anything that said joH without the -wI' can't be used in direct address all by itself
Indeed, there's no rule that says that in direct address, {joH} should always be used with a possessive suffix. But I noticed that in the examples posted by voragh, wherever there's direct address, we have {joHwI'} instead of just {joH}. If there's a rule at work here, then it's a ridiculous one. There are times one doesn't need, nor is it proper to say {joHwI'}. I can understand rules which's purpose is to make understanding clearer. But I'm irritated (and that's an understatement) from rules with no apparent purpose. A language is supposed to be a tool to help you express yourself. ~ Dana'an don't let the bastards grind you down