Board Thread:Watercooler/@comment-27393108-20160105154547/@comment-3328029-20160105232942

It seems to be a bit of the standard, and helps greatly decrease any possible overlap with another script (not that there should be any, especially if you have a unique namespace). But it's not required as far as I know, and a decent number of script don't do it.

I prefer to use it since, as you said, it's a namespace. These aren't "Wikia" scripts (which everything on the "Window namespace" can be assumed to be more or less), and having it on the dev namespace helps make it clearer what it relates to.