Unlike standard edits, the page for “Switch obverse and reverse” doesn't require a reason.
While the reason for the switch will sometimes be obvious, I think it would be better to require text.
Whether or not text is required, it would be useful if the “switch” page set focus on the reason box so the reason could just be typed (or pasted).
(It just happens that the Confirm the switch button just happens to be in roughly the same location as the Switch obverse and reverse link, so an erroneous extra click submits the form without a reason even when the submitter plans to add one. I was just swapping a group of coins and it happened to me twice for 24 pages.)
