That looks like your providing a fixed lateral impact point where there is not supposed to be one for side impact, and a nice long leverage point from the front. I think it would save your case on a mild low side and probably bend your frame on the way to breaking your case with an instance of more violent impact from 90 degree hit. (There's not a lot of clearence left there.)
In the case of just catching something low hanging while moving forward in a straight line, I think it would definitely tweak the frame. Based on the relatively thin width of the riser and sharp edge...I see a small home made pipe bender. I guess it will depend on if you are going to run them straight out or in the safer raised position.