Double four-in-hand? isn't that three or four wraps around the tie? Wait, don't four-in-hand knots look best with a button down?
Another question: what about the exotic knots?
Floating Spiral Knot
Glennie Double Knot
Krasny Hourglass Knot
I'm not trolling here. Undoubtedly, these won't be acceptable in any business environment. The Onassis knot is the worst one out of this bunch. Either that or wearing two ties simultaneously.