The main reason I don't run borderless windowed modes any more is because I have a problem with all them. It was due to the way it implemented its double cursor fix. While it worked it had issues sometimes of making my mouse cusor disappear in windows. I used to use Simple Borderless Window, but I stopped for a couple of reasons.
It puts your windowed skryim in the center of your monitor and fills the rest of it with black. Just do a search for 'Window' or 'Fullscreen' in Nexus. Fake Fullscreen and Game Companion are others.
There's quite a few of those out there actually.
