True, but I'd honestly say that the benefits outweigh that drawback. My Laser Commander character is using Power Armor, and I plan to take all 4 ranks of Strong Back eventually. The only question is whether or not to spend 6 levels getting Nuclear Physicist rank 3 (I don't use AP a lot, so I dropped my Intelligence to 6 for a more rounded build), or just start trading all my extra ammo to Arturo in Diamond City for Fusion Cores (the character is using Laser Weapons exclusively, so I only need Fusion Cells; everything else is just trade-bait).