Re: Yes, Invented. @ M Gale
Oh I dunno. I've had 7" tablets before, and they always seem to fit perfectly in a jacket pocket. Ten inch tablets will always need an extra bag or backpack, unless you have pockets like windsocks. I say this as current owner of a (battered, old but still functional) Asus TF201, which sits nicely in the netbook-size padded compartment of a laptop backpack.
Granted, maybe a seven incher won't fit down the front or back of a tight pair of Levis (insert lewd joke here), but then who with any sense puts anything breakable in the pockets most likely to break them?
Plus a seven incher is still passable as a phone if on the very large side, whereas a ten incher really does start looking Dom Joly-ish. That's assuming it even comes with a phone chipset and dialler app.