so from what I hear, the current consensus is that toobless does indeed reduce rolling resistance but it comes with a huge pain in the ass level of installation hassle. weight is virtually identical between thicker tire, goo, and tape vs. tube and tire. You don't really need lower pressure for road like you do with mountain, but you do need to pump up your tires virtually every ride, so it's kind of a tradeoff.
I and S are tubeless on our roadies, I have been for a year now with about 1000 miles, she just got a new bike we built with tubeless.
Trying to get GP5000 TL tyres on our carbon rims made me question the reason why I was trying. When I flat roadside I might end up just throwing the wheel away. I had to beef up our roadie saddle bags to have Pedro's levers. On normal clinchers I never needed levers.
Unlike MTB, I don't know yet if it's worth it, unless you frequently get flats on the road then give it a try.