Spouse has a Novara Randonee with drop bars and Shimano brifters. It is an eight speed with a triple. Due to certain issues he is considering a conversion to a different bar system, probably butterfly bars. All conversions I have seen end up using bar end shifters mounted to thumbies and then new brake levers.

He likes the brifters. Is there any way to mount them on a trekking/butterfly bar? I know the bar diameter is different. I told him no but he insists there must be a way. If not, are there other bar options?

(FYI, we are first trying the strategy of getting the drop bars up higher than his seat through the use of an adjustable stem).