We've once again entered ASSORTED EGS:NP COMICS TERRITORY! ...Which basically just means stand alone comics that can be assumed to have vague canon status without me busting out the non-canon cannon with each one.
It also means the potential for topical comics, such as this one. Splatoon is a Nintendo game that is coming out soon for the Wii U, and this comic depends on it not being out yet, so it doesn't exactly fit neatly into the canon timeline. Still, this is totally something Grace would do.
This comic was, of course, pretty much 100% an excuse to draw Inkling Grace.