Are you sure the atoms use primaloft? I know the new ones use coreloft. Would take a pretty big change In design to use those two different insulations. I prefer synthetic on my legs and down for my upper body mostly for mobility and durability. Extreme moisture isn't an issue most of the time where I am.
Correction Coreloft, not Primaloft, thanks. I have too many freaking puffies of all kinds and lost track of them. I am excited of the FL Vest, just need to go figure out that insulation and weight.
Thanks for catching that.