Nope, you are right, actually it's a bit useless, and you need to be carrying a two handed weapon with no interesting stats on it. Do it have uses? Yes you can move before the enemy, but with their low movement is not much, you can try to get into cover with that first movement, but you are losing the option of carrying a shield, much more interesting for a dwarf than hiding. Skavens can move 6 instead of 3 and get this option without needing to wield a "not so useful weapon". Some of us ask for just a guy with Miner skill to give the bonus to the rest of the band, but the dwarven movement could still be low to give a pickeaxe to one of them, with 8-10 squares should be nice.
I think an 8-10 movement without having to equip everyone would be huge! I would be willing to equip one guy with the pick and specialize him to it if it meant we could actually compete in specific scenarios.