Yessir, Google Wallet working with Screen Off!!! Using this epic ROM and Dafoxs method from the ATT section for enabling Google Wallet. It's a two part (actually 3) process with 2 flashable zips:
http://xdaforums.com/showthread.php?t=2061030
Flash zip 1 and run Wallet till it stops. Delete Wallet from /system/app. Change build.prop to Galaxy Nexus, reboot. Install Wallet from the play store and run the setup. Sometimes it'll go through and FC, sometimes it will sit there forever. I give it a good 10-15 minutes if it doesn't FC and call it good. Delete Wallet from /data/app, boot to recovery, flash zip 2. From there you will be able to set it up and use your pre-existing Google Wallet cards. Don't forget to change your build.prop back afterwards and it's all good.
I've used Dafoxs method on every TW ROM available to us. 4.1.1, 4.1.2, stock, international, custom, whatever... It works, and it works with this NFC off mod which I was pretty surprised about :good: Oh, and if it doesn't work at certain places, that just means that they have changed their NFC system a bit. Maybe in prep for ISIS? I'm not sure but McDonald's doesn't seem too Google Wallet friendly anymore, just FYI.