They're awesome. Having front/back art is really convenient. Also, unlike full minis, these don't block a lot of the map/battlefield. I know that a full-on physical mini can be really imposing, but they're retard expensive, take up a lot of space, and leave a lot to be desired if they're not painted well.
Don't get me wrong, if I had infinite money I'd undoubtedly have a massive bookshelf with every conceivable mini having a professional paintjob, but I don't. Skinny mini's are a great substitute. If you like what you see with this KS, take a look at the first one because you can get any of those by backing the new one. I spent a fortune on the first run and don't regret it, at all.