Is writing "L-rd" with a hyphen, either when reading יהוה or in general, also a Jewish custom? I first saw it it on some messianic website and thought it's rather missing the point and whole context of writing G-d with a hyphen, but since then I've seen people very occasionally using it in a Jewish context.
Since some people won't use Adonai in casual speech and will instead use Adoshem out of respect, it could be this with extra steps? It seems like it's conflating the two somewhat different customs, though.
