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I'm not sure if the thick shoe goes in the front?
The "usual" system for "typical" shoes a thousand years ago, was that the primary shoe is shorter, thicker, lighter-colored, and softer than the secondary shoe which is longer, thinner, darker-colored, and harder.
But there's variations especially in color and thickness. So the best rule-of-thumb is that the shorter -friction-material shoe is the primary, the longer-friction-material shoe is the secondary. Primary to the front, secondary to the rear.
But I suppose you've already figured this out by now.
I've pulled brakes apart where the primary shoes are on one side, and the secondary shoes are on the other side. Or reversed--primary to the rear, secondary to the front.
And the light-duty "Leading/Trailing" shoes are all the same. When the front shoe wears thin, swap the front and rear to put the nice, thick, unworn rear shoe into the position that does all the braking.
I've seen bonded shoe friction material separate from the metal of the shoe. Most recently, on a Ford Aerostar. The shoes weren't all that worn, but the friction material just fell off the metal backing.
OTOH, I'm part-way into a brake job on my own K1500 (K2500 9.5" semi float axle) where the riveted shoes broke up, I'm missing big ol' chunks of friction material, and I've got beat-up mangled rivets still in the metal of the shoe.
I have no preference between riveted and bonded friction material on shoes. They ALL wear out, they all have failures.