One thing I forgot to mention, which may not make any difference snowshoeing depending what shoes you have, is that gaiters will protect your pant legs from being cut by the edges on your skis. With snowshoes, they may help prevent a puncture from the side crampons on something like MSR's that have points all along the side rails.

Rick-rear snaps are a PITA; the next pair I buy will be front opening. I also have an old pair of Chouinard over boots I found in a box in the trashroom in my building. Collector's items. I posted a pic of them maybe a year or so ago. Cumbersome to put on, but kind of neat. Very old school.