Originally Posted by SkyDog75

But Sora did go that way. Sora 3500, introduced in 2013, did away with the thumb button.

Getting back to the original question about Claris, I'm running 3x8 Claris shifters on my '86 Trek 300. They don't have a fit & finish that'll wow anyone, but they work well. I haven't put enough miles on that bike to test their durability.