Thanks for the input so far. I only did a few comparisons, but yes, finding the TQ (in the 50" width range) are lighter by a half pound or pound compared to a bag. I was just wondering, if the width is nearly the same, and the length is the same, is most of the difference losing the zipper and related hardware (vs. insulation and fabric, which is where I thought I was reading the savings was). In actuality, I like the fact that most quilts, it seems, are nearly as wide as a bag, as that makes them more useful outside of the hammock.
The difference between synthetic and down will already be a big improvement for me in terms of packed size and weight. And, since my UQ is synthetic, I need to lose some packed size especially. Losing another 8-16 oz is always useful, but I was just wondering, for someone who has to use a tent when camping with the family (they're not all converts, so no sense in packing a hammock on top of the tent...), is the weight savings worth the compromise on the ground. (And, that's presuming that since most on the ground use bags, a quilt is a compromise.)
Thanks for the input so far, happy to hear any and all other opinions as well as I make my choice.