A while back, we posted a congressional redistricting plan for Idaho that kept the Ada-Canyon metro area in one congressional district, at the cost of - well, a real mess. And concluding that it wouldn't happen because setting up a dumbbell second district consisting of the north and east made no sense.
A bunch of other people have submitted plans along similar lines, and they've been posted on the redistricting commission's site. Have a look.
The takeaway here: Our original point stands.