Well when I’m competing in CDP division for IDPA cleaning a single stack mag is a no-brainer since I just pass a brush though it and go. But when I compete in IPSC’s Limited and Open Divisions it’s a bear having to disassemble and make sure the magazine stays perfectly clean and free of any residue even during reassembly. This being due to the fact that double stack 1911 magazines are a lot more finicky when they have even a little bit of mud/dirt in them than the single stack magazines would be under the same conditions.
BTW, would you actually have or spend the time removing the mud and then cleaning your double stack magazines under “Real” conditions I think not.