Workspace Switcher Loop?

[Chris Spencer <gmane 20 evilspam spamgourmet com>]

Is there a way to configure the workspace switcher, so that when you 
navigate using keyboard shortcuts, the first workspace is logically 
adjacent to the last? That is, if I'm at the first workspace, and I 
naviagate "left", I'll be switched to the last workspace automatically? 
And conversly, if I'm at the last workspace, and I navigate "right", 
I'll be switched to the first workspace?

Currently, if you're at the first, the only way to get the last is to 
use the mouse or key through every workspace, which is inconvenient.

Thanks,
Chris