OK, now it seems to me that metal to metal connections are a bad thing. DIR seems to feel the same way.

Now, on top of this I see a lot of DIR diver using a double ender to attach their reels.

Personally I find of all the gear which can get caught in lines, reels aren't half bad at getting a loop of line around them.

So, why not use cave line to attach a boltsnap? I've just attached one on my reel, using a decent sized clip, and I can't see a downside.

Do you need the double ender for something else? Don't you have a spare double ender on a D-ring somewhere anyway?

I've also seen the look on a mates face when his H reel disappeared into the abyss (to be recovered on the next dive) when the double ender was the wrong way around and unclipped itself.

Maybe I've missed something important. But I can't see it. Seems like a no brainer.

Digs.