I would totally just give in and write that, except for the prompt I was trying to write was for Sherlock and Poirot, with no mention of their sidekicks.

At the moment, it's more like "John and Hastings Bitch about their Respective Geniuses and Discuss the Fact that They are Essentially the Same Character". I mean, I know Christie was going for a Watson for her hero, but it's a bit silly how similar this two guys are. Which is probably why they won't shut up.