Oh yeah, if you're playing a Tele or other 25.5" guitar and switch to a Mustang it'll feel at first like you've picked up a toy. Folks with thinner fingers, like me, probably have an easier time adjusting. I've seen video of Norah Jones playing hers but have never seen her in person.
I like the Mustang bass too! Got a '76 (or '77...I should nail it down) that's lots of fun to play and has a crisp, punchy sound.
My "longer scale Mustang" is a Gibson SG-250 I picked up recently. The dual pickup sound is quite different, though, as the 250's pickups are wired in series. For me with the Mustang that dual pickup phasey, clucky sound is where it's at.
-Dave-