Yep works well but I notice the person on the other side of the conversation is a little lower (recorded volume) than it was on GB. This is already known, reported, and experienced by some others and isn't a huge deal for me. Everything else works fine for me.
Let me add this as well. This app (linked above) does work just as it is downloaded, but I have been testing, and for me, have found something useful. When using this app on GB ROMS it required (in settings) to be set to "standard android API" and in some cases needed additional audio lib files. With ICS, it does not require any additional audio lib files. And the app will work in both "kernel supported" and "API" mode. However I find that it works better in "API" mode because the recorded volume of the person on the other side of the line is higher (louder) than when I use the app in "supported kernel" mode. I am using romracers ICS kernel so maybe that is why it works in "supported kernel" mode, but "API" still works better for me.