Weight Difference Between Snaps & Sewn Footbox

So, despite my best efforts to keep my wallet happy, I'm thinking about getting a 3 season burrow but there were some things I was wondering about:

1- Is there a weight difference between the cinch and snap footbox versus the sewn footbox?

2- For people who have the cinch and snap footbox, have you noticed your feet getting cold due to the gap in the closure?

3- Is there anything the folks at Stormcrow or current burrow users think I should know before making any decisions?

I prefer the sewn footbox myself because I think it's warmer. However, the cinch/snap type is more versatile. I'd give Adam a call and speak with him about your concerns. He was more than accommodating with all my questions and made my decision easier. Adam makes a great quilt. You will be happy with whatever you decide to get.

I'm interested in learning the answer to question #1