I say go for it if you can get one. I finally scored a (used) Oberon Roof of Heaven cover for my K2 yesterday. If I had known how much I would love it I would've bought one a lot sooner. It makes me happy to just look at it.
And by the way, it doesn't feel significantly bulkier to carry in my purse than the M-Edge Go cover did, and I like the "balance" of it better. (Thanks, kindlekitten, for reassuring me on that point.)