This is how I've got some of my retractors now. I've got them placed in the pocket of my BCD with the end coming through a stainless steel grommet in the bottom. I use it to hold a flashlight and my second dive computer I use. It works pretty good, but been seeing alot about the clips and wondering what everyone else thought.Retractors can be mounted directly to the BCD either using a pin that goes through webbing or a removable backplate that traps the strap in between the retractor and the backplate, resulting in it being firmly attached not dangling at all and many retractors including the ones I use have all metal clips on them.
And I figure the retractor is like all other pieces of equipment. It will eventually break down. Luckily their cheap, so I'm not too worried, but this discussion has given me some ideas on how to mount my accessories.
Don't believe everything you hear, don't be afraid to try things out for yourself rather than heed the warnings of others. I've had several retractors on my gear for hundreds of dives over decades with no issues. Besides how do you know a spring reel in salt water has a limited lifetime since you are afraid to use a retractor based on what somebody told you?