I would suggest making it a little bit more balanced ^^. Still wondering why every1 just wants to HAMSTER (tons of suggestions about making more strongback-like perks).
Why not suggest something like "You are now able to take more items in your inventory, even if you are overweight, simple muscle strain will never stop your demand for loot."
(You can't take items in your inventory while overweight, or close to it, can be a little bit annoying sometimes, seems like a pretty balance-harmless perk for me)