Get both, the Fabarms are so nice but the Grizzlies are cool as well. I have a Fabarm and love it, would have no problem dragging it about in the bush although it's a bit long with an 18" barrel for bushwacking. I'm buying my wife a 12" grizzly for her birthday and might have to pick one up for myself, I like that any 870 accessory will fit them so you can easily change the furniture. The Fabarm is not as easily moded but they don't need much out the box depending on the model.
This one has me jonesing
https://www.canadaammo.com/product/detail/grizzly-12ga-15-shotgun-w-rifle-sights-and-heatshield/