Agree, needs to be able to be turned off incase it bothers some people in some situations. Not having the option to turn off a little thing like this could put a damper on an otherwise incredible laptop for someone. The clock isn't needed (everyone is happy with the laptop without it), but having it as an option only would be a neat little improvment.
It's hard for me to say without owning the laptop (maybe that will change) but I can imagine simply not liking the look of having those glowing blue numbers on my laptop all the time. Or maybe I would like them, I duno. It needs to be optional or not at all, though I like the idea.