eeee! you closed the thread before i posted!
what i wanted to say was...
Portraiture's more than just lighting.
the model, make-up, wardrobe, setting all play a part too.
if the model can't pose, basically you've got boring shots.
if the make-up and wardrobe don't match, then you've got a disaster of mis-matches
if the location doesn't gel with wardrobe and makeup that's right, then it's a case down the drain. but then of course there are the artsy types who mix and match.
lighting can bring out certain effects, but if the composition, wardrobe and location are all mis-matched.. LOL then it isn't good.
you can check out Zahne's portraits ;p
don't look at the PnP section... most of the images there, i feel... have no special feel to them. most of them are like... zzzzzzzz XMMs
if you can master working with natural light/ambient light, it's easier to work with strobes etc..