For dynamic, the seams and tailoring would have to be done with displacement, unless you were using an external dynamics engine (such as Marvelous Designer).

If it weren't a question of texturing and ensuring smooth dynamics with Poser's cloth engine, I could smack you out a .pac file of a suit in pretty much no time once I figured out M4's measurements. Poser has the problem of multiple layers, and I find it doesn't like folds (such as the roll line on a suit) very much. I can whack out real-world style dynamic clothing all day and night...sadly, much of it doesn't work fantastically in Poser. Poser likes simple stuff.

Personally, I got MD because I sew stuff IRL (and have done so professionally in the past) so it was way easier to wrap my head around than modelling software.

花 | 美 | 花美 | 花火 
...It's a pun.