Vandersteen 5A biwire shotgun absolutely required?

I doubt you really need to bi-wire to get best tho I have talked with Richard several times and he advises Bi-wire so I would trust the man who made them. What confuses me most about Bi-wire with my fathers Wood Quatro and the 5A is the fact the woofer is powered which IMO makes Bi-wire less of an issue then with most speakers.
My father runs Audioquest Mont Blac speaker cables on his Vandersteen Quatro's which are Bi-wire but not shotgun and the sound is stunning.

Does anyone know if the Audioquest Mont Blac single run bi-wire is just split at the speaker end or is it 4 seperate leads tied into the amp end?