What kind of camera are you upgrading to? (I used that as an example as many folks go that route when upgrading from a GoPro.) You can clip the bolt snap to a d-ring and when not using it, you can snap the male/female clip to keep it closer to you.
Same GoPro 8 just adding a tray and lights. I will probably look at a new camera once smaller 4K60fps cameras come out. Possibly the RX-100 8.
Whatever solution you choose keeps the priorities in that order:
Top Priority: Attached
Secondary Priority: Streamlined
Just make sure it can be detached in case of entanglement etc.
And compared to a sea lion or a competitive swimmer, scuba divers aren't all that streamlined anyway so a medium sized camera rig doesn't make that much difference.
Certainly staying attached is priority number 1, but being streamlined is important as being a tech diver at some point the camera will come with me into a wreck or a cave.