As much as it pains me to say anything nice about Dave Matthews, this song is actually really fun on pro keys.
The main riff is really simple, but it has these slow grace notes in it that make it enjoyable. It's a decent enough riff, but the song is really run because at least half of the song is fiddle jamming. The fiddle runs up and down the keyboard between verses and choruses in really fun ways. Think the flute parts of Down Under. Most of them can be done easily enough one handed, though, since they're not particularly difficult or stretchy.
There's also this RIDICULOUSLY FUN PART where you play these ascending triplets in unison with the guitar and bass. The song is worth a 5 for those parts alone, in my opinion.
Oh, and there's a sax solo, which is easier than the un-soloed fiddle jamming.
It's actually a lot like Down Under, but much more varied and jammy. Totally recommended for any keyboardists.