I've never liked a raised rib on a side by side like Greener's Blue Rock Pigeon gun or the more modern Model 23. I can see the attraction of the CSMC though.
Why do you think you don't like them, Konor? Tradition, looks? Just curious.
The reason I ask is that no one complains about a raised rib on an O/U gun. Almost all of them have 'em. I've only shot one O/U in my life that didn't have a raised rib and that was a Valmet Waterfowler, which was built with 36" barrels. It has no rib, to save weight obviously, but has a short "stub rib" fore and aft.
Experience with a model 23 waterfowl . I used it for a few years wildfowling and enjoyed it in the half light of dusk and moonflighting but when I used it on clays the ramp up onto the rib distracted me in a way that a flat ribbed over and under didn't. I remember thinking at the time, around 20 years ago,that if it only had a flat rib it would have been my ideal side by side for wildfowling and clays. I like the look of the raised rib on a side by side but as I say I just find the ramp a distraction , I had the same experience shooting an older beretta semi auto that had a steep ramp onto the rib itself. I dare say time spent shooting would probably solve the issue but at the time I just moved on to another gun.
Edit to add Beretta was an A390 step rib that a friend owned.
I like my side by sides but I'm not a died in the wool traditionalist. My favourite gun for years was a model 12 plain barrel 20 bore ,in poor condition the barrel was pinned to the action to prevent it being taken down to comply with magazine restrictions as interpreted by the London proof house.My skeet grade model 12 restricted at the Birmingham proof house is not pinned and can be broken down. Both barrels are not in good condition and pitted but I have enjoyed both as much as any side by side.
SRH