That could be an issue for a type rated airplane. PDX is predominately a PA31/BE99 base. They have one metro and two BE1900 runs. Both are currently staffed and there are plenty of guys at the base who would like to take them if they came open.

Not to say you couldn't be based in PDX flying a metro or 1900. But you would likely be TDY a lot until you could hold a line there.