I have the i-Blason Slim Fit S Line Flexible TPU it's pretty nice but I am probably going to be getting a hard case now that there are more being made. Probably going with the hard folio so i can look cool. lol I found a good master list of all things N4 here LG Google Nexus 4 Smartphone Cases And Accessories
i pre ordered the cruzerlite one that they have in different colors. it is scheduled to ship 12/13 though so that may be to long of a wait for you. they made some for the gnex was excited to see they were working on one for this phone to. may be worth you checking out. plus with that case backside up everyone will know its an android.