It’s 27 degree C today and I managed to try these two on for a few minutes. Both are size M which is the acronym size I normally would wear. Fit wise I have no problem of layering these two together (I was only wearing t shirt underneath, but a light sweater should be fine). One thing I maybe just nitpicking, the j36 collar is quite high and rigid, so the j74 hood stuck high up the neck and look a little off. Hope the j36 will soften up a bit when I wear it more.
j74 is such a easy piece to layer with, the material is so smooth and low loft, it’s very comfortable to wear under any outer shell.