I've found that even the Hori protectors are very difficult to get on without air bubbles (which are usually caused by trapped dust). I start off by putting small pieces of clear (Scotch) tape on the protectors at the corners before I put them on to make it easier to peel them back off which you inevitably will have to do to get rid of the bubbles. Without the tape at the corners, you have to pry them off with your fingernail which will end up bending the corners of the protector permanently, making a permanent air bubble at the corner.
Once you have the tape on the corners, it's best to put them on as quickly as possible starting at one edge. If you do it quickly, you can usually get them to lay down without trapping too much dust. If you have trapped some dust (and you WILL trap some dust) you have to peel the protector back and pick up the dust with some clear tape without trapping more dust. It's hard to tell whether the dust is stuck to the protector or to the screen, so it often takes more than one try to get the dust with the tape.
It's not easy even on a flat surface like the screen, which is why I was wondering if a full-body one wouldn't be nearly impossible to get on without bubbles.
-Bri