lynskey is pretty light, considering the bike size, and that it includes extras like bottle cages, rear light... extra steerer lenght?!
Road bike:
I would have taken the light off but it's strapped on with zip ties since I broke the Cateye mount. Bottle cages are rubber and don't weigh much? Steerer I am reluctant to cut. The stem is slammed now. I did 200km in the drops yesterday, but this bike will last forever, so I'll appreciate being able to raise the handlebars when it becomes my old age shopping bike! Sealant in the tyres also adds 200g, so if you really wanted to strip it down for a hillclimb it would be maybe 8.2kg.
Plus 1kg for the Gravel bike:
Heavier frame material. Big dinner plate cassette, but maybe offset by no front derailleur. Bigger handlebars. Bottle cages are carbon, so probably similar? 300ml of sealant, so an extra 100g. Heavier MTB pedals?
Geometry wise both bikes are quite similar, so I'm hoping I can switch between road and offroad easily.
Andy