I so love my Rock Lobster tig team sl, frame is 3.25lbs.
Anyway, my rigid version is just under 20lbs, or I can quickly stick some fox forks on at 21/22lbs.
I was originally wanting the scandal, but the one I wanted (16″ slot dropout) never came up on classifieds/ebay, I kind of bought the RL by default and as is, I don’t see me parting with it for a few years. Also the On One carbon whippet might be worth looking at (shame about the decals), also as jonb, Kinesis do a real nice looking frame Maxlight.