Montbell UL with the pockets, no rain 50 degrees
Same with rain jacket, 35-50 degrees
Rain in the 60s, rain jacket only.
The above assumes in camp, not moving. When moving, my rain jacket alone is good to 50 degrees in the rain.
To me the heat I loose in my extremities is too great for a vest only warmth option, so if it's going to be 2 external wear items, i recommend down sleeves.