The RFID flip out key for my 2010 has seen better days and has popped apart a couple of times when using it to open the filler cap. 100% CNC Billet Black Key Cover Protector Ducati Multistrada 1200 S 10 11 12 13 | eBay got it today 30 seconds to fit and a quick function test proved good, also allows you to attach the key to a keyring.
I've a spare "dead" key for fuel, and drilled a hole in the fob to put in a hanging ring. Cheapskate, me.