I have not had the opportunity to try it, because Texas is currently around,100 degrees :-). I hope to be able to try it soon

We're in the midst of a heat wave in the northeast and I needed a warm weather top quilt for my trips overnight on the Finger Lake Trails. I have the Inferno 30 underquilt, and love the quality, so decided to purchase the 5 in one 55 degree quilt for the warmer temps. I use it more as a quilt to cover up with. Again the quality is superb, what I've come to expect from Siearra Madre. Thank you for another fine addition to my hammock arsenal.

Well, I do love the ability to use the puffles for a variety of applications, but it's summer. Hopefully fall will hurry up and get here so I can get in the puffle warmness.

Tried out my new puffle and loved it. It got down to about mid 50’s and was quite cozy. I believe that I could go down to about high 40’s with this quilt. It’s cinches up nicely at the ends of the hammock. Stitching is top notch as well. Packs down pretty nice too.

Have used the 55F Puffles a couple times now, top-quilt and under-quilt.
Adequately warm, actually, certainly to 50F (your mileage may vary as the number of layers you wear sleeping).
I like the ease of attachment as under-quilt, and the way the draft collar and snaps both help keep legs and feet warm as well as help "find the footbox" after climbing out and back in after a relief trip.
I also appreciate the design and construction of the compression sack for the quilt, allowing easy packing and a minimal pack volume.
In the photo, I used a green Puffle for the under-quilt to match my Ninox.
Can't say I've mastered how to rig the Puffle as underquilt to work best with the Ninox in "flat lay"; not sure if my feet are leaving the quilt coverage or not... I expect opposite sides of the Puffle need to be raised/lowered. Video clips aren't clear on this.
It seemed the Puffle hugged the Ninox well enough, even with out any toggle or snap-loops to attach it mid-hammock.
Like the pocket idea, too, but haven't decided yet what I'll stow in there.
Bought a couple more Puffle 55F's to give to other hammock-camping family members. This temp point and the resilience in rain seem a good match for most late spring to early fall campers.