For what it is worth, I have a 2013 Honda Fit and have hauled both regular and widebody pins with no issues. The only time I had to be somewhat creative was with an IJ(W) in that the plunger stuck out a bit too far resulting in my not being able to close the cargo door, yet all I had to do was slightly shift the game to its right when in the Fit and the cargo door closed with no problem.
As for unloading, however, I have found it a little bit of a task to lift some pins onto the bottom lip of the cargo opening when removing a pin (I am not a big person). Yet, to date, all has worked out with no known loading, hauling, or unloading damage to either a pin or my Fit.
I do, though, second this:
Quoted from yancy:Pro tip: get a self-adhesive rear bumper applique to prevent scuffing when loading & unloading.