So if you're powering a GTX 1080 Ti that uses 250 watts and power is supplied by 2x 8 pin PCIe power connectors, you'd feed the power to the board on the short side.  That single lead would give the board the bus power it needs and then the power for the cards would route through the board out the long side connector to a double headed PCIe power lead to the top of the GPU?

I can see how cabling and wire management would be neat and clean.  BUT, seems like you'd be pushing a ton of watts through the board as a result.