Clumsy should be reworked some so the character actually seems clumsy. Some suggestions would be having a chance to drop items when picked up, a higher chance to fail crafting recipes with a unique message, a chance to spill food when eating, and maybe tripping every so often when running.
The current perk could be renamed heavy Step, since the character has more heft in their step.
Also a perk idea, Encumbrance Trained(or another name that fits better).
It would allow the player to experience less penalties for being encumbered, and most Military professions would get it since realistically they would be trained to wear their gear like a second skin.