The comfort is good. Was only recently again for several hours without any einstellten with the belt on the road, which is known for the original belts neck pain. And I wear no lightweight.
Shortening the strap works as the smooth lengthening the bringing forward of the camera without problems. However, if you carry the camera close to your body, the belt is a little uncomfortable on the neck. But I manage myself, by letting dangle something in the longer tape the camera. Then holding them in addition to the hand in the hand strap, which is not uncomfortable.
If the belt shortened, without which one locks the snap to the belt elongates over time, probably due to the camera weight, of course. But it is not really tragic.
All in all, despite the small disadvantages, a handy strap which is all times better than the original. Strong buy recommendation !!!