Hey Warp, I'm running Avon Cobras front and rear and loving them. Just writing what I've observed. I'm not convinced about putting a car tyre on a bike but that's me. They appear to work just fine and the people I've met using car tyres are all sensible souls. I respect them and their decision - as well as their decision to exercise their own free choice. And without exception, they respect my decision. I doubt anyone using a car tyre on their bike would say it is better than a bike tyre in every respect. I would say that they've weighed up the pros and cons and CTs suit their needs.
I reckon some people would say that fitting a blower to a bike not designed for one is similarly not a good idea because of the extraordinary stress and strain it puts on the rest of the drive train. Some might also say it's possibly even dangerous.
I don't know, so I don't judge. Instead, I say if it floats your boat and you're aware of the risks and can live with the compromises, do it.