I also use a setup like Crazy_J. I have probably over a thousand dives using this type of setup on my housed camera, Nik V, and Video set up. I have, seen hundreds of sharks, swam through schools of barracuda, been buzzed by large stingrays. I have gotten up close and personal with large morays, stonefish, lionfish, fish bigger than me. I have never felt it necessary to use my rig as a defensive weapon. Though if I did, the way I use a lanyard would not prevent me from doing so. The only time I have ever been "Attacked" is by an over zealous spade fish that mistook my ear for a handout (my bad, never feed hotdogs to a school of fish that have teeth :-} ). I am aware of my gear and have never had an entanglement problem, but if I did, the rig is easy to unclip. I have been a donor in an OOA situation. Was able to drop the camera and handle the situation. If it hadnt been on a lanyard, it would have been gone. If it were a situation where it would have caused problems, it would have been detached with one hand and let go. You should be familiar with all you equipment, even you cameras and lanyards. You should be able to operate all equipment, including all releases, by feel. I sometimes dive with more than one camera, each camera has its own lanyard attached. Either my buddy holds the other camera, or it sits at the bottom of the descent line. Swapping is a simple matter of un-clip and clip. Im not saying you should or should not use a lanyard. You should do what ever You are most comfortable with. This, as always, is just my opinion; your mileage may, and probably will, vary.