Hi Suzy I havent used it myself but their are eight customer reviews for that model on the amazon website, ranging from good to bad which should give you a good idea of the plus and minus points. Google search garden gear vac shredder and click on the amazon link.
I have a standard style garden vac and find it great when the leaves or debris are dry and crisp and very handy for getting into the nooks and crannies in the borders. I would imagine the wheeled type would be good on lawns and driveways but limited access wise elsewhere.
Hope that helps and regards Norm