One of the main trade-offs in owning an ebike is that changing tires and tubes is harder, and with most rear wheel motors, it best to adjust the deraileur and disk brakes at that time. So what to do if riding in the city, with metal and glass everywhere? I looked around at the various products sold to help prevent flats, got a bit confused, but then found this great video from Bolton Ebike where they put the top products to the test: Mr. Tuffy Tire Liners, Slime, Tannus Armour, and Flat Out, the clear winner.
So we have been adding Flat Out to all the bikes that come through the shop, if the client approves. It just makes sense (though I make more money if you bring me a flat tire, I am not that anxious to work on preventable problems!)