Leica size… YES it IS.. Really there is not a WHOLE lot of difference between IT and a 32mm.
Leica build quality…. I've only had these a SHORT time but two things that REALLY stand out are build quality and user friendliness. The diopter adjustment beats every binocular I've ever owned and by a long shot. One twist of the eye cups makes you wonder why everyone else doesn't do it this way. Everything about the binocular works, well PERFECTLY.
OPTICALLY? I really haven't come to any conclusion. I've used them a LITTLE. Colors seem to be SUPER and of course optically it is excellent. We'll see how it compares to a Vortex Viper HD and a Vanguard Endeavor ED II, both 8X42s later on.
Split rings… Yeah… They are so I can snap on and snap off using a harness. So far I see no real wear on any binoculars though I'm sure it's worse than the OEM nylon strap. So far that's the best solution I've come up with. OP/TECH USA offers a Uni-loop style attachment. You just loop around the ring that's part of the binocular then it has a clip for easy attachment. I've got it here but haven't used it yet.