Last weekend, I got to use my Jarbidge for the first time. According to the weather log here, the overnight low was around 38. I used it on my HH Explorer deluxe with the Triangle Thingies. It was awesome. I don't have a top quilt so I did a little experimenting. I am a cold sleeper by nature.
First night: Used a poncho liner homemade top quilt with velcro foot box in conjunction with a 30 degree sleeping bag. Too warm so I abandoned the homemade top quilt. Next night, I tried just the poncho liner top quilt. Around the 38 degree area, I had to add the sleeping bag back. I was cold on top, but my shoulders and back never got cold. Using the Triangle thingies was a snap and very easy. The Jarbidge stayed in place even when I rolled/turned in the hammock.