Skid plates (after market)

I'm looking at skid row and RA motorsports aluminum. Skid row is all 3/16 steel and RA is 1/4 aluminum (overland and the beefier Moab upgrade). My question is, is the aluminum really strong enough to handle a solid blow from a rock on a trail and would a solid skid row plate from front to back add a noticeable amount of weight being steel. I have brute force bumpers and frame sliders and want to add plates for the trails.

 

What alloy is their aluminum skid plate?

 

5052. The standard overland grade is flat 1/4" and the Moab upgrade is just tig welded reinforced gussets in impact zones from what I can tell.

 

Aluminum is strong enough for reasonable impacts, but sucks for sliding over stuff. It's softer and will gouge and grip more than steel. If you're not going to be grinding over rocks then the weight savings are substantial.