Excellent Product and Customer Service
The shadowcast works very well as a compact capture card. Of course, it integrates with the Switch seamlessly. I have also been able to use it to cast from older consoles (with an additional adapter, of course). The desktop app has not given me any trouble, either.
The only flaw is that the device might overheat with extended use. It's best to disconnect it from the power source when you're not using it.
Customer service was excellent. When I believed there was a problem with my order they handled it very quickly.