Hi, just my quick two cents;
I've just started my malifaux collection in gencon, and purchased the dark debts box, the beckoners and the big guy with the 2x4, getting a miss terious in the process.
I also purchsed some of the starter boxes (ortegas, rasputina, som' er teeth and Lady Justice) and blisters galore.
Now, i've been painting and playing with minis for a while, and i know the differences between plastics and metals, and I found the plastics from wyrd to be quite interesting.
first, the amount of minis that are crammed in that single sprue of the dark debts box is unbelieavable, i actually shamed myself by asking if it was ok, and dropped my jaw when every component was shown, kudos for that.
Second, the putting together of the minis has been painless, and turned out some very interesting poses, they are indeed very "flat" and smooth, but to me this was expected as i was dealing with camisoles and tuxedos, the monster loooking ones where fine to my eye, but could indeed benefit from a touch up in detail (because of this, they were undercoated with Krylon spray http://www.krylon.com/products/camouflage_paint_with_fusion_technology/ the khaki one is cool, so that they would get some texture).
third, Miss Terious is awesome, great sculpt, wonderful detail in her box, good degree of resistance in the plastics (yes they will snap if heavily fiddled, but this is a mini, not an action figure), she painted up very nicely without need for a heavy undercoat (leather pants gotta be smooth, oh mama) and was put together in a snap, all in all, a flagship model this is.
So far, my experience with wyrd plastics is mostly positive, nothing out of place from what we get from other companies, the material itself is different from what we get from GW or Privateer, but this is not a negative, just a fact. the minis have turned out great and i'm looking forward for more.
hope this helps.
GS