The problem is You can only use JumpList Launcher with standard Aero. With WB enabled You get some 'not looking good' issues like with the look of the menu and the icon backgrounds not being transparent. And You can't do subfolders obviously. But no idea if that works with jumplists at all.
The icon backgrounds not being transparent appears to be a bug in JumpList Launcher itself rather than WB. All the other jump lists such as the ones for explorer or IE show transparency in the icons without a problem.
Ignoring that issue, if the skin has provided jump list images the end result can look pretty nice.
