I've bought this mic to record my classical and steel-string guitars. For its price, it has a surprisingly good sound quality and the different options with button / windshield / capsules offer a variety of sounds and applications.
I've tested most of the combinations and some of them make it good for recording vocals as well.
In fact, for home-made demo recording there's no point to invest in something more expensive.
However, its construction has some flows. I received my mic with a missing screw on the mic holder, still don't know if I've lost it on unboxing or it was not put there at all. Also, the button is quite unstable and if not put carefully on position, there's no sound but only mains hum.
Overall, it's a nice piece of equipment for both instruments and vocals and despite its mechanical flows, it's surprisingly good for its price.