Does it bother you? Then don't do it this way, I myself have never blinded my buddy or had a problem! I dive most of my dives out of caves so my gear reflects that! The fact that I can operate in other environments with perfect buoyancy without hitting my yokes hard enough to hurt them is a testimonial to my ability! I have been in some pretty tight spots and it has never been an issue, but I don't panic! BTW it might dislodge my first stage but never my regulator!
Why use suboptimal gear in a cave environment? In any environment DIN would be the better option (if traveling and renting yoke tanks, use a din to yoke adapter).
This makes no sense, your first stage is part of your regulator...
Also, just because you haven't had a problem doesn't mean it's a good idea.
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