What's goin on with ISIS

[LowchevyII]

I was just curious what is going on with ISIS. For a while it seemed like the end all be all of automotive aftermarket wiring and now I've neither heard nor seen anything about them. Why aren't builders using them in their projects. I see quite a few using AAW and Ron Francis, but no ISIS. Any particular reasons? I was thinking about running it in my project but am having reservations due to the lack of others running it (meaning to me it may have some insurmountable flaws).