BEC bypass idea ?

[Bondonutz]

I'm setting up my SC truck with a MMP and a test motor from a unmentionable Co. to run on 2s lipo and wish to use a BEC but got a idea ?

Instead of soldering a adjustable Castle BEC onto the ESC battery wires couldn't I just use a female balance tab and wire up a JST plug to go directly into the Spektrum RX from the balance tab of the 2s lipo ? Of course I'd be pulling the ESC's RED wire.

The servo will work like gangbusters at first but even when Lipo hits LVC it still be getting 6volts.

I ask because I've never seen anyone do this befor ?