Totally agree on the UI front...Lockinfo isn't the prettiest thing. In fact, I themed my last install to look like the Notification Center pull-down pane and plan to do it again as soon as I'm on a stable release.
Still figuring out the bit about disabling Notification Center. I've got the pull-down shade set to show on Homescreens and in Applications (via Activator) and have turned on the PopUp Blocker built into Lockinfo; hopefully that will keep my lock screen clear, but I haven't had any notifications yet to test it out. Ideally, my settings are:
-Apple's Notification Center pull-down in Homescreen and while in apps.
-A clear lockscreen with the option to pull down InfoShade from the statusbar.
What I'm not sure on still is whether or not LockInfo will pick up on new notifications for apps that have the "Show in Lockscreen" option turned off in the Apple settings.