In my first review I mentioned the CAME-ACTION Gimbal could not mount a GoPro LCD BacPac because of the short screws. But I did mention I believed it was strong enough if we could find longer screws. Because people were asking, here's a demo of the CAME-ACTION GoPro Gimbal (with Encoders) supporting the weight of a GoPro with LCD BacPac and ND Filter.
It still works perfectly and is able to stabilize all this extra weight. Checking the website, there are less than dozen left. Hopefully it's not something that goes out of stock and you have to wait weeks for another batch, so if you're still deciding, this is a great GoPro gimbal and it's possible to support all your GoPro accessories.
CAME-TV GoPro 3-Axis Gimbal with Encoders
Here's an adapter you can use for Painter's Poles if you want a cheap extension for your GoPro. find it (here).
Seaport Digital Painter's Pole Adapter with 1/4-20 Male Thread