I use them ... almost exclusively ... for casting & trolling methods. I find them to be soft enough for good "action" and tuff enough to withstand heavy use & multiple fish.
I will also admit that I am a little biased towards them vs commercially made products, but mostly because of their action & tuffness. I'm a personal friend of Slabeye (Rodney) and have been using Slabanator jig bodies since they were first introduced .. and they have taken the place of several other brands of plastic jig bodies that I had been using for many years, simply because they work very well in catching fish.