Audioquest Type 4+ -- BiWire cable ??

I have two sources telling me two different things about how they use the Audioquest Type 4+ cable (two 17 gauge and two 20 gauge conductors). One claims that it is a biwire cable (skinny pair for the highs and fat for the lows), while the other says it is intended to be used as a non-biwire (one skinny and one fat to each terminal) and that you need to run two such cables to properly use it in a biwire application.

Which is correct or how are you currently using it?

Also, I was considering it for a biwire application to a 4 ohm speaker using a 100W amp. Anyone know if it can handle these levels??

Thanks in advance,
Chris