I purchased an Otterbox Commuter for my Galaxy S3 and hated it. Honestly the worse case I ever used. The buttons were harder to use and it made the phone almost too wide, and the case has little grip. So don't worry about the lack of Otterbox. As far as I care they only really make a decent iPhone case, and even still you can find cheaper just as sturdy options all over the place.

I found this Exact Armor Case for Google Nexus 4, it should work fine.

Here's one in white

in blue

If anything take a look around XDA's Nexus 4 forums.

Using the Ionic Guardian case when I get my phone. I liked the 'domino' color and I wanted the heaviest case I could find atm.

Waiting for an 'Otterbox Defender' kind of case for the long run...