I'm running BI in a Unraid Windows VM, zero issues. I never use it with C4, just to many clicks to to get to them, a lot quicker opening the BI app. The big advantage I see with BI is you can use it with any camera.
V5 does now require paid support if you want updates after the first year. Pretty lame, I'm guessing most people will wait until a major update that has a feature they want, purchase a month of support, then wait again.