Just wanted to let everyone know that the 'Live USB Creator' worked fine for me. I just created a Live USB, from the 2012.02 KDE ISO, and I'm running (live) on it right now.
The KDE Partition Manager worked fine, too, after a bit of confusion - it wasn't exactly as clear as I would have liked. But really, only one false start even there.
Now, since I used less than a gigabyte on my 4 gB stick, time to move on to adding an LXDE boot option, and maybe an XFCE as well. Should come in handy having it all on a USB stick right in my pocket...
My congrats to whoever it was that wrote the USB Creator - great job!