I got lucky and found a Flyweight Sapper at the Orvis outlet in Kittery today. I planned to hit the Barbour outlet and checked out Orvis on a whim. The one thing that had me 2nd guessing the Sapper was the insulation. I wanted a lighter weight version, but the Lightweight Sapper was no longer available (orvis used to list it but it's been disco'd for a while now).
I happened across the Flyweight Sapper in the clearance section of Orvis and jumped on it. It was marked down from $399 > $279 > $239. I asked the SA to set it aside while I ran next door to Barbour. He then offered to apply an additional 20% off for the sale to start next week. I never even made it to the Barbour store!
Couldn't be more pleased! It's the exact jacket I wanted in a lighter, 4oz waxed cotton with no insulation. Perfect for spring. They only had one XL and once I found it I didn't bother looking around for more.
Pic courtesy of Orvis:

Barbour® Flyweight Wax Sapper Jacket
Incredibly lightweight, with all the features you need for a warm-weather adventure. Waterproof hood that can be hidden in the funnel collar, so you'll be prepared for rain or shine. Sleeves and back are sewn for optimum movability with an action back design. Four flap pockets with a vertical zip breast pocket and and inner zipped pocket for valuables. Elastic waist for a fitted appearance. Lined in Barbour's pure cotton shirting weight tartan lining. In olive, black. 4oz Barbour sylkoil waxed cotton, pure cotton lining. Imported.