Replying to Gimbal or Power pole for gopro?

I have a gopro hero 4 black. I was planning on buying the funnygo 3axis gimbal, and while the tests do look cool, I have some concerns. First is about mounting a mic and a filter. From what I have seen, it will take the weigh fine, but it may decrease battery life. Wind is said to decrease battery life also. Between this, the price, and how the handheld ones can limit you (limited axis control, no joystick), I'm thinking it may not be the best option.

The other day I heard about the power pole from polarpro. Seems like a cool idea. I was thinking about running this battery into the battery bacpac, freeing up the USB on the gopro for a mic adapter. I have used poles for a while, and while they aren't quite gimbal' smooth, the benefit of ease of use, low cost, and simplicity are looking pretty tempting. Anyone have any suggestions?