I have a Katabatic Palisade 30, and I wanted to set up a summer quilt and topper for cold weather, so, for that I went with an EE 10d 2oz climashield quilt.

The Katabatic quilt is down with a Pertex Quantum Y Fuse Eco Riptstop outer shell and Pertex Quantum Tafeta inner I tested both last night at 75dF, so simulate a warm summer night, and the Katabatic quilt was more comfortable but warmer.
The EE climashield quilt was very clammy feeling to me, but the Katabatic, although a warmer rating, was not clammy at all.
I also have a MYOG (materials from thruhiker) 5oz climashield m50 quilt that I find clammy.
So my question is about the clamminess.
Is that more due to the shell material or the insulation?
I would prefer to have a synthetic 50df quilt for summer.
I do have some 1.5oz Primaloft. Would that help instead of climashield?
How about the fabric. Would 7d from EE be less clammy than the 10d?
Would a pertex shell with a 2oz climashield breath-ability and clamminess be similar to the Katabatic down quilt?