I've never really done much with rigging/conforming of garments, so I can't offer help in that area.

 If you have the time and energy, learn both.  

Each has something to offer: Poser conforming items are more usable by folks that don't like/use/want dynamic items.  MD and Poser cloth simulations are like by folks that want the 'realistic' flow of cloth over a body.   You may have to decide which group (or even both...) you want to develop your garments for. 

 

 

 

RosemaryR
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"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."