Oh, oh, oh. This is absolutely terrific. You've got the brilliance of the relationship expressed quite nicely here, and I love the cleverness of the dialogue. It feels completely in-character (which is difficult to do, seeing that it's Moffat piled on Conan Doyle -- which should really be a supergroup, or a pair of superheroes, or something) and I found myself laughing out loud on quite a few lines.

Please write more in this fandom.