The BD harness looks good at about 8 ounces. The Camp for $25 looks like a good deal, but
at 12 ounces for small not so UL. You can sew on your own gear loops if you need more,
but I like to rack on a sling so I can pass it to a partner.
Self sewn leg loops from seatbelt web and tubular and tied 1" double pass swami run about 6 ounces, but one has to source new webbing and thread. Webbing, other than climbing specific tubular, is often either surplus, 2nds and or sat on the shelf for a long time. Thread varies in quality and may also have sat for awhile. Plus then one has to test.
Great ideas everyone.