Underquilts in an Ultralight Backpacking context

[Qurelel]

I'm also a UL backpacker and when I became interested in hammocks and joined the site, it took me a while to get out of the mindset that a lot of people here aren't hikers, let alone UL.
As far as the weight of a hammock setup is concerned, I have actually found that it hasn't cost me any weight gain. Of course, I didn't cowboy camp so I'm not SUL but I was using a Cuben single wall shelter weighing 27oz. My 1.2 robic hammock with zippered bug net and suspension only weighs 15 oz and a Cuben tarp puts me right at or below my ground weight. While it is slightly bulkier, my 20F full length UQ is only an ounce heavier than the Klymit insulated pad I was using. So I disagree that hammock setups are not UL as I have found otherwise.

[Johnner]

How is it possible that something like this doesn't add to the weight?

[FrancisTapon]

Hammocks do add weight, which is why Qurelel said that he's not SUL.
He's UL.

His point is that you can be UL and have a hammock if you're careful about what you bring.