I've been running AOKP for a few months with icy glitch and the ol tljl3 modem. I'm very impressed overall as everything works! (In gingerbread I also used the TLKG2 modem)
To install it I used Odin to flash darkys jvh, and then in recovery I formatted everything and cleared all caches, and then transferred Aokp b31 via cwm USB storage. Then I flashed the rom and ended up in a boot loop as I forgot to remove the external SD card. Took the SD out, booted, and good to go.
I ran into a problem once when I wanted to reflash B31, in recovery I formatted everything and then forgot to actually install the rom! The phone went into a boot loop and nothing worked to fix it. No 3 button combo, no battery pull technique, and even the trusty USB jig didn't do it!
4 hours and 2 doobies later I had ADB set up on my Linux box and once I told it that I'm attaching a nexus not a galaxy s, everything went fine. I used adb to get back to recovery and from there I flashed the rom and life was good.