Here is a review from Brad Colbow, admittedly from a creative/drawing point of view. He seems quite enthousiastic about the Studio. Also he thinks the fan noise is very low. The pen (jitter) seems to be much improved.
Mind you, I did not experience the SLS myself (I have no need for it), but I thought a link to a review with a different angle could be useful as well.
EDIT: He does not mention the hinge much. At the end of the video he also states that reviews of the new Surface Go and Surface Pro are coming up. The pen (jitter) seems to be much improved, so that is good news for the creative persons among us
😉 . But if anyone creative is in doubt about the hinge on the Studio, maybe the new Surface Pro is an alternative.