Weight is 1705 for the pair, and I would likely use my Fusions for most rides. 66 is a lot of rim, but for those flattish brevet races, they may be the hot ticket.
Don't let Soloist Assassin see this, but I can't really tell the difference in an extra 200 grams on the wheels. I regularly switched between my 1500g wheels and 1750g ones. The difference is that the 1500 ones are stiffer because of a slightly deeper rim and better spokes, not that they weigh less.