I have a Browning Gold Evolve (autoloader), a Remington 870 Wingmaster Classic Trap (pump) and a Caesar Guerini Summit Sporting (over/under). All 12 gauge, all 30" barrels.
I could get a 18" barrel for my Wingmaster; I have to take the barrel off every time I come home to clean it, it'd be easy enough to just clean the receiver and slap the 18" barrel on it, then get back to cleaning the dirty 30" barrel.
I don't have a side-by-side, and the offerings from Stoeger wouldn't be that much more than a new barrel for the 870, and would be something different that I don't have already.
I do agree that there's no material thing I own that is worth risking my life or taking someone else's over, but should I feel the need to investigate downstairs, I want to have something I can bring with me. It's just nice to have options.
Cameron