Installed it finally today, it seems to be working well. Lack of SD emulation is a bit sad, as I can't test out a lot of the apps I was running before, but it seems to be working alright. Successful port was successful, I've got multitouch trying very hard to be responsive and mostly succeeding, and wifi worked on the first try. Excellent work so far, it's coming along quite nicely.
I haven't run into any actual issues yet, other than the usual known batch from the last release. Launcher2 seems slower than before, but I think I had installed LauncherPro on the previous release, which ended up being much lighterweight. I'll see how that fares here later, I need to sleep for now.
Not crazed about the soft buttons, but at the same time, the entire button situation on the iPhone is just sort of weird to begin with. Having real volume buttons is well worth the effort of fiddling around with the soft buttons for the few times I need to use them. I only sort of liked the pull-down notifications more, and that's mostly my fault-- my case makes the pulldown difficult to activate.
I'll let my phone charge up again and play with it more tomorrow.