I say get it. Sounds like you know what to expect from it. With that long of a commute, you should enjoy your ride, and try to cover that distance with a resonable measure of efficiency. If you 'down-graded' to a heavier more clunky commuter bike, you would always wonder what you were missing had you went with what you wanted in the first place.

Get the Orbea for now, and if you find yourself wanting something more utilitarian, you can always go that route in the future for less $. I would replace the front wheel quick release with something more secure, so you can make do with carrying one U-lock on days you want to stop somewhere after work, and carry that in a small/medium daypack with a good suspension system to keep back-swamp to a minimum.