Well my bars are certainly niche. In my first cross race I heard the comment “haven’t seen bars like that since the 30’s”. But there is reason.
When I’m honking out of the saddle on my 54″ gear, I am pulling hard on the bars, the most neutral hand position to do this is with hands at ten-to-two. So I looked for some bars with just this geometry. To keep the reach, I use a 100mm stem, and to keep the hydraulic brakes, I used 25.4mm curly bars. There are very few proper 25.s diameter non-flat bars. The Soma’s were the only reasonably priced ones.
An acquired taste, but once ridden and adapted, they are great. A halfway between proper drops and flat bars. Probably something like Jones bars, really, at a fraction of the cost.