Unless you've got a ton of potholes and off road trails on your commute locking out the fork will save you some effort. Fenders, rack, bags. lights, frame-pump, etc. will fully commuterize it. Also, some sort of street tires will help as well. I rode a hardtail mtb 20 mi rt daily in heavy urban traffic for 5 years. The frame response is light and quick. Necessary, sometimes in dodgey situations.