I got Stabilizers about a yr ago and just got to use them this year a bit. First, I really do like them for those days when crampons are overkill and snowshoes aren't necessary. And I luv the fact I don't have to worry about jabbing a crampon into my pant legs! And they are pretty comfortable to wear on all terrain vs crampons you may have to take on and off. Mine do have the Vibram sole and so far I've had no problems with any loose screws. (altho I've been told I personnally have a few!)
I got a bag of xtra screws when I purchased them just in case but I will take a check after hiking to tighten as I hadn't thought of that. Speaking of feikos etc. I shop on ebay a lot and man, talk about having to watch for fakes! You can't really blame foreigners (Tokoyo, Korea, Malaysia, etc) for taking advantage of our buying frenzies and they have become a cagey sort. At first you could see that it was being shipped from China but now it could be an Asian in Rotterdam buying Far Eastern goods and selling on Ebay. Canada is another and goods from Australia. Designer goods are a huge market; whether you are talking designer fashion or athletic gear. Anything is up for grabs. All I can offer up is ask questions and return anything you think is crap. And if the seller (Ebay or any online store) misleads you or "pretends" they got a bad lot, etc; make them cover the shipping costs to return it and refund your original. Unless YOU make it financially unsound for them to sell crappy foreign goods they have no reason to do otherwise. (please note not all foreign goods are crap. I just want to know what it is I am buying so I can decide beforehand if that's the way I want to go)