I would like to know if anyone uses the "overboots" such as the Arctic Fleece brand?

My feet are plenty warm, even on very cold days, as long as I am moving with just my Gore-tex lined uninsulated hiking boots and some thick socks, but they get cold when the temperatures dip below 45 degrees and very cold when the temperatures go below 30 degrees when I am sitting in the stand for several hours.

Rather than buying bulky insulated hunted boots, I was thinking about the overboots: carry them to the stand and then put them on once I arrive in the stand.

What is your experience with them?

Have 2 different kinds. Don't expect much.

I presume that you meant "Arctic Shield". I have problems with cold feet regardless of my footwear, for me the AS overboots have helped.