Maybe you could copy-paste it here so others can comment on specific portions?
There was a discussion at APConf about it (@Sebastian could you find a trace?). I think the examples were using the bear: scheme – although it saves 3 characters, I’m not sure having the mental image of an ursidae is helpful.
On the first reading, it seems both simple and complete enough to fly. Surely @cwebber and @emacsen would have specific comments on this I-D.
I’m using bearcap: scheme here because at least two different people have noted to me that bear: is used for some Mac application already. I’m open to alternatives, but it does not seem useful to have a scheme that collides with one already in use elsewhere.