This is my experience. On my off-topic fixed-gear commuter with a single V-brake up front. It has the proper washers to do a toe-in adjustment. It lasted about 6 months before the squeal came back. I decided I like it. Better and louder than any bell or horn.
I'll see how that works with my wife's Terry. By refusing to ride her bike until I "got rid of that awful noise" she got this whole thing started. I want to think it will work out as you say!!