I had an FNX45 and was holding it/firing it during a firefight. The enemy shot me with an M4 while I was running for cover, hitting my legs leading to a ruined (black) cargo pants and thus ruining the items in it. While my FNX45 was normally stored in the pants, I was actually holding it when my pants were hit. Even so, the mag in my FNX45 was ruined because of this. This might extend to other clothing items too.
edited because my previous conclusion was false.