Hammock plus other weight/volume additions is tough
Yup, this is a good part of why I don't think I'll switch to a hammock any earlier. Too few trees I expect in the desert, but you also have lots of water weight to carry, don't need the extra pound the hammock adds.
Ditto in the Sierras --- my mini-crampons and ice axe are quite light, but they still add something, plus the requirement for a 2.7 pound bear can (ugh), potentially long distances between resupply points, and perhaps additional clothes for the cold. So the earliest I'd consider switching would be Echo Lake or so, but since my wife plans to meet me near Ashland, that should work too.