On badlands you can jump on to spire from balcony and you can get from the resup bridge onto the house balcony by using that little ledge that runs along the house. Both of these jumps can be performed using the boston basher as well, although they cost a small amount of health, obviously.
I'm sure there are plenty of these little kind of jumps on every map that would make it tempting to run the winger, but the fact that you lose damage output coupled with the boston basher overlapping in utility makes me think that it won't be worth it to run the winger.