Thanks for all the help! Got my hands on a JustStock last week, threw it in my ride and everything works great.
A great little speedo that is really smooth, had to fool around with the brakes a bit to get them dialed, but now it's tearing up the carpet.
And there seems to be no issue with running a 1S with this hobbywing, didn't find any documentation to as to why this is so, but I'm a happy racer.
I'm thinking of getting a HW Extreme Stock for running in the boosted class.
Thanks again fellas!