Yeah, the lever installs inline:
As it’s designed to mount on the wide section of bars (31.8mm) it may well need some serious (off-centre) shimming to mount nicely on bar ends (22.2mm) but I doubt it’d be too much of an issue.
It may well be that the metal strap clamp could just be re-drilled to be shorter.
On all of the pictures I’ve seen it’s also looked like it was out at a bit of a weird angle, but the specs say that it has reach adjustment.