Hi Zeeb,
You are right about the wiring. Considering this you could use standard DSC switches and change the output connector to a Deans to plug into the SuperReg. Since lithiums' voltage is so much higher than what you are regulating you can afford some voltage loss in the wires. You do have to convert to R/C plug from the SuperReg's Deans output but if you keep them short you will minimize your voltage drop between the SuperReg and the receiver. The SuperReg is about the same price as a BatShare and a standard regulator and it cleans up the wiring.

The two 2-wire leads are for charging so with the Duralites you would not use them. The 3-wire lead is for the failsafe switch connection.

If you want to run the two outputs of the BatShare into two regulators and then to the receiver it will work just fine. One regulator will supply most of the current so you will get a larger voltage drop between that regulator and the receiver than if you used the SuperReg and two plugs but it may not matter to you. Either way is acceptable.

I don't mind answering the questions. I want you to be happy with what you end up with.