I debated on whether to get it. Is it worth it? Better than a mouse?
This is completely personal preference. I hate the track pad so no to me its not worth it. To others they love it over the mouse.
Only you can truely determine whether it will work for you. Do you like using a Laptop's trackpad over the mouse? If so then yeah buy it, if not stick with the mouse
you can have both attached to the computer at the same time right.
I see using the mouse most of the time, except for photos and zooming in on the web etc...
but I don't want to have to unplug and plug one in etc.
Ordered mine with Trackpad mainly because Apple's Magic Mouse is pretty much useless to me.
However Magic Trackpad feels quite comfortable in gesture driven Mountain Lion, and I definitely plan to use it for casual stuff like browsing etc. For Photoshop, video editing and gaming I anyway plan to buy mouse separately.
I'm gonna get the trackpad because I will use a seperate mouse for video-editing, photoshop and gaming.