I am using it https://github.com/DavidBruant/OoI/blob/d422b2cd593265aea469db64d191d93011e1dd3c/Firefox/src/ts/main.ts#L44-L56
The rationale is that I want to enable the browser devtools in my development workflow, but not in the addon I distribute via AMO or else.
I'm happy to do differently. The only thing I need is make some decisions based on whether I'm in development or "production".