Global seems to have overcome the linear thinking of black bug-dom by putting (recently) their equally transparent logo (which is much less intrusive) in the upper right corner while leaving the transparent NBC (or FOX) logo in full view. I'm just glad that they have cut down/been unable on adding "On Global" to the opening credits of shows on their HD feed.
Geez, I mean, c'mon ! How needy are these folks that they have to infiltrate the very content of the show to let you know that you're getting "Global-ized" ? It's enough that they have their bug on the screen, run highly intrusive full colour banners across the bottom during a show to let you know that you're watching Seinfeld on Prime while Jerry and Elaine are on screen (well, no crap, Columbo, ya figure ?).... sorry, rant control was turned off for a moment.
So it appears that it's up to the fancy of the subbing station as to the nature of the bug that will appear, or what ever they can get away with.