As the Northwestern-most Dawi, they are a rare breed and likely to be wiped out quickly.
If Louen or Franz wants a friendly faction in the mountains it may be wise to befriend and protect these Dwarfs. Alternatively, one can let them be wiped out so they can conquer the mountains for themselves.
If playing as The Barrow Legion, they should be a primary target so you fully control the Grey Mountains. From there you can push out in your desired direction, while having a foothold to fall back to if the Bretonnians or the Empire overwhelm you.