I have not yet seen any posts of this sort so here goes...
Monitor Mode is working on my ASUS Google Nexus7 (32GB Unlocked GSM). I've successfully cracked my home network WEP, as well as, WPA/WPA2,WPS enabled keys using bcmon.apk
Airodump-ng, aircrack-ng, aireplay-ng to get WEP & reaver to get WPA/WPA2,WPS enabled.
NOTE: I simply installed and ran the bcmon.apk. I DID NOT have to compile KO or modify anything for it to work on my device.
!! Rooted !!
ASUS Google Nexus7 (32GB Unlocked GSM)
Android version: 4.2.2
CyanogenMod version: 10.1.0-RC3-tilapia
Kernel version: 3.1.10-gea48912