I worked with electronic compasses a about two years ago. At that point they were really ***** to use. You had to calibrate it for the spot you were using it if you wanted good results, and even still it might not work properly. I don't know if the situation has improved since then, but I believe that the reason for the bad performance (disturbances in magnetic fields) is still there. So I don't think it's such a big deal even if a compass isn't included.