It's better than window clings on a car, in my opinion. My 2007 Gateway "Convertible Notebook" (what used to be called a tablet, back in my ancient college days of 7 years ago) is rocking a black and white Stemage logo (a one-man band, best known for his Metroid Metal series), a stylistic B&W Metroid (both round stickers from some Stemage album I purchased years ago), and an Evol Intent logo--a fantastic drum 'n bass group.
http://cdn.doandroidsdance.com/assets/2013/10/evol-intent-lo...They take up about a third of the overall screen height. Having the bleeding red heart separating two black and white logos makes for an interesting aesthetic. My image of the impish young hacker is enhanced by some weird-o stickers. If I was presenting an image of the buttoned-up, sophisticated C-level software architect, I'd prefer an unobstructed view of my generic, high-end laptop's brushed-metal screen backing.
Or you could go for the TV approach and just put one big sticker to cover up the manufacturer's logo in the middle of the top.