When working events, I use a think tank belt system with two spider pro holsters, one holds a Nikon D850 with a 24-120 lens, the other has a Nikon Z6 with an 80-400 lens. The lens mounts directly to the spider holster using a Spider Pro Lens Collar Plate. This system works really well except when I want to put a 16-35 on the Z6. I've tried many things but the tether bail works the best. I can attach it to a think tank camera support strap that is attached to my belt harness. This makes it super easy to switch cameras or just put the Z6 down without having to put the 80-400 back on. Works perfectly!