I have a '14, one year prior to the revised system. The linked brakes are a little odd, but you get used to it. Seems like I heard about a few new owners getting surprised while stopping from parking lot speeds...getting a sudden spike in front braking and and dropping the bike...but knowledge is power on that front.
If you want max braking power on the road, though, I believe you have to hit both the front and rear levers together...if I recall, the manual says that you won't get max braking by using the front lever alone, and in my experience that does seem to be the case (though maybe I just haven't pulled the front brake lever hard enough on its own).
Frankly, for me it's kinda like KIPASS: Not as bad as some people make it out to be--not a reason not to pass up the bike--but something I could do just fine without.