I've actually been driving a Rogue loaner this week and it has the flat-bottomed steering wheel, overall I don't care for it(and it's not heated nor does it have heated seats!
When coming out of a turn I like to let go of the steering wheel and have it straighten itself out, resting my fingers along the outer part of the wheel in case I need to grab the wheel. Doing this causes my fingers to move up and down when it comes to the flat spot, sometimes temporarily losing contact with the steering wheel, something I don't want.
I guess it looks
kind of cool, like the newer tires with no sidewall, all rim, but like those kind of tires, I personally wouldn't want it myself