I have to admit Simon that it is the look of the bumpers that attracts me most - practicality comes second. A dented bumper does look horrible and I would want to replace it - but, my line of thought is that it would be a lot cheaper to replace than a damaged front wing.
I'm afraid, that even a light impact would damage the bumper, and the bumper would damage the wing.
My personal preference is a "naked" front and the rear with over-riders.
The front ones will not provide any protection anyway, as are mounted in a weak way. I would have removed them long time ago, but, unfortunately, there is a part of the electric harness going "through" their mounting brackets.
So removing means cutting the brackets, or trying to disconnect the cables, which are covered with this sticky dirty protection coating.