To avoid the early upgrade fees, I waited to upgrade my DROID X to the VZW GSN until April 1.
I have not had the one-way phone issue, but 4G is very flaky, with frequent dropped connections. My phone is permanently on 3G unless I need speed. (I don't root or try to upgrade with leaked upgrades.)
Once the 4.0.4 upgrade comes out, I will evaluate how well the radios perform, then I can fully answer your question.
Right now, all I can say is that it is still a much better phone than the DROID X as far as WiFi stability, bluetooth stability, and 3G stability. (Sorry, I can't compare to the DInc.) I have never had a dropped call while on 3G. The ICS is smooth and the phone itself is sexy as hell, too.