I have been flying sub250g for a while with a naked GoPro 8 but I still love and fly my 5", 6", and 7" quads. I wanted to use my naked Gopro 8 with those setups but for sure with the first crash, Gopro is gone mostly due to the weight of the setup itself. 
I wanted to have sth that can be switched easily between sub250g and heavy setup and have full protection when I do freestyle.
This is what I came up with and I have been testing it for a while and it works very well. I crashed multiple times and broke motors but GoPro is still alive.
This is specifically designed to enclose the GEPRC case since it's been proven to be the best option for Gopro 8 (at least for me).

Key Features:

• Lightweight and durable carbon fiber design; Just 14g
  
• Easy assembly and disassembly
  
• Front and back protection
  
• Accessible buttons and ports
  
• Compatible with GEPRC ND filters and lens protection