I thought it would be funny to have a placeable gnome that you can have as a companion.... except, it doesn't do anything. It gives you the standard kind of NPC dialog menus, but it never responds. Companion wheel supported, but very low carry weight.

The only advantage is it gives you the "Forever Alone" perk which would give you increased rate of fire, to make up for having an imaginary friend

Only if you can also equip him as a throwing weapon and chuck him at people.