Just got mine as well. Fits fine on my 5D3 (and old T1i just for fun), and I threw a tiny patch of gaffer on top as I find the bubble level a bit distracting.
I wish is was just a bit longer front to back (see Labdoc shot, it's the same item) to stick out further towards my eye. The metal in the back is still very slightly exposed. It's a dramatically lower fabric catching risk, though, so I'm probably going to stick with it as made.
If it really bugs me I might exacto knife off 2-3mm from the front end of one of my two spares (4x come from Amazon) and glue it into a fullsized one for a longer version.
But otherwise I'm in business. Thanks, Labdoc. Good find!