On my fifth try, I finally hit the bullseye, which I guess makes it eligible for this topic.
The subject is the second pair of shoes - the ones you put on after you take off the boots. Originally I planned on some amphibious sandals from LL Bean - until I weighed them and they came in over 1.2 pounds. Next I tried a pair of FiveFingers (those foot-glove running shoes) - but the fit wasn't right (I've got size 11's for feet) and there wasn't time to make an exchange and get used to them. So I ended up making the 2010 trip with a pair of Waverunners from Walmart (only 8 ounces). On 80% of the days they were fine, but they really weren't enough shoe. So for this year's trip I started with a pair of Prive slip-ons, which were the same weight as the Waverunners while offering more support and actually looking acceptable as a shoe.
Then, this week, I finally managed to try on a pair of Crocs in my size. Oh my goodness! Much lighter, much more substantial sole, and very comfortable. So they will be the shoes making the trip this year.
Fifth time is the charm, I always say. And the big takeaway is, of course: start weighing and packing a month in advance of departure, rather than just a week ahead. Give yourself time for finding replacement items.
Bon chemin!