Just got myself a nexus 4 and I think it is absolutely brilliant. The only annoyance is that at first I was extremely glad to find it came with a back and front screen protector fitted but why oh why did they have to put the emblems for the power and volume buttons directly on the protector?! Now I'm going to have to remove the front one and fiddle around putting another one on and probably making a right mess of it.
The front plastic didn't strike me as an actual screen protector really, it's just there to protect it whilst it's in the box.