Not sure about that shifter. Shimano’s first under bar shifters were called push push. Both upshift and downshift paddles moved in the same plane and were located close enough that mis shifting was common. It’s hard to tell from the photos how far apart those levers are. It looks OK in one photo but not so much in others.
Sept. 4, 2019, 8:37 a.m. - Andy Eunson
Not sure about that shifter. Shimano’s first under bar shifters were called push push. Both upshift and downshift paddles moved in the same plane and were located close enough that mis shifting was common. It’s hard to tell from the photos how far apart those levers are. It looks OK in one photo but not so much in others.