wife and i both have Sprint Nexus S 4G's with ICS 4.0.4, odexed, zip-installed via CWM, rooted. Please note that this phone is not on the confirmed list.
Bluetooth sync works fine. Media sync over bluetooth works fine. Occasionally wife has issues with lag between controls and phone (ie, it doesn't pick up immediately, or the system doesn't ring until after the first few rings). Also, we have to delete our profiles and re-setup in the system menu if we re-flash phones.
2012 Kia Sportage SX FWD, Silver, Leather, UVO, keyless entry.
no sunroof, no nav, no interior led lighting, no heated/cooled seats.