For a commuter, I'd def. sugest getting full fenders, they'll keep you way cleaner that the ones you have installed. They'll also do a much better job of keeping the bike clean.
I use that rear fender on my Giant Anthem for muddy races. It keeps the crap of me, but it certainly doesn't keep gunk off the bike like real fenders would do. But for mtn biking, when you're gonna get dirty anyway, it works pretty well. It's light, and it's easy on, easy off.
I really like the Seek model bikes. The white one with the alfine hub is reallllly nice. I was almost ready to pull the trigger on one, but then the crap economy hit, I almost lost my job, and I'm about to start a new job. But the new job is about an hours drive. Certainly wont be commuting anymore, no need for the bike. I will be carpooling however with two buddies of mine.
Enjoy the new ride!