Thanks guys, great posts. Here were the logistics:
In the past, I have put the backpack under the hunting jacket. This was primarily because it was not hunter orange. However always found it binding this way & when I get a bird or need a drink, I ended up having to take my jacket off, this could happen several times a day & slowed me down. So I got hunter orange backpack this year & everything was much better until the temp dropped this week.
Yes Castor, the sandwiches were placed on top to prevent excessive squishing, but the apple was in the middle with the nuts/bars, with two G2s at the bottom. I only take an extra Tshirt with me & change it an noon if I've sweated through it.
Since the ambient temp & I usually both warm through day, I will if anything, take off an extra layer - not feel the need to put one on. It's a 20km hunt/trek & I need to reach certain checkpoints at certain times to get out before dark .... so lunch is usually restricted to 20 minutes or so .... I will snack/drink along the way though & this is important to sustain energy.
I ended warming up my sandwich on a stump that was sitting in the sun, & cut through a chunk of energy bar with my hunting knife, then stuck in my mouth til it thawed enough to chew. Not a big deal but it's a shock to find it all so frozen in such a relatively short period of time.