I think they are pretty sharp. I also think they would be better with one of those plastic buttons over the nut. (Like you see on modern car bumpers)
If you're talking about what I think you're talking about those are actually the sonar transceivers for backup object detection.
As far as the Corbin sidecovers, I wasn't a fan of 'em back when they were readily available, but they've definitely grown on me over time, especially since they're on some of the sharper Valks out there...
...another reminder that I wish I'd dropped a few grand on random accessories back in the early days just to hold on to 'em and sell 'em today...