Works fine. It's been a while but I think mapping the right analog stick to the face buttons works pretty much as you'd expect. I don't remember it being too clunky, and I generally liked playing it on my Vita.
Depends on whether you can stand more Katamari. There's not much that's completely new. Many old "favourites" return (hey did you enjoy the "roll up a cow" level because I think there's something like that in there!) and while a bunch of the levels are new, they're still variations on stuff the franchise has done before. For example, I think the bedroom level is new, but guess what: it's a bedroom, just like all the other games had inside-a-house levels. There are a few genuinely new levels, though, and though the game doesn't make a ton of use of the katamari stretching/squeezing, there are some challenges that ask you to use it.
But for all of that, it's a competently executed Katamari game that plays pretty well given the constraints of the Vita, and I was happy with it at three times the price. So I say get it.
