It's very difficult to identify without a photo of the actual bug. But just like the people who are speculating on that bug from Malaysia in your link, I think you're probably dealing with a leafhopper of some type. But it might also be a weevil or an assassin bug.
Weevils have a hard exterior like you describe, and they often have strange shapes, but I don't think they jump well. The leafhoppers obviously jump well (hoppers), but they don't usually have such hard external surfaces. Assassin bugs usually have long antennae.
If you can get a couple of clear photo's, I can probably identify it. Although as you say, we're approaching winter, so we might have to wait until spring.