This is an entirely fruitless exercise, given miscrients need only reroute via an alternate airport to avoid the ban. This ban will serve solely to interfere with the operations of the affected airlines... or perhaps that was the whole point?
It's also worth reminding everyone that an airline's maximum liability for loss or damage to a checked bag is limited to 1131 SDR (Standard Drawing Rights, about £1240). This is clearly defined in the Montreal Convention.
I look forward to the first complaints of damages to a Macbook, XPS or anyone foolish enough to check-in their DSLR.