OK, maybe it wasn't the bars themselves...
But just after install, I'm leaning into an on-ramp and I reach to cancel the turn signal... but hit the horn button instead because the controls are in a slightly different position now. The Stebel roars its presence, scares the shit out of me, and wobble, wobble, wobble as I nearly jump out of my skin. Yikes.
Anyway, just a short ride with the Daytonas, so the only impressions so far are that the wider bars makes steering a little easier, and the awkward bend that was killing my arthritic thumb is gone. We'll see if the thumb pain eases up after continued use.