Not really sure why it wouldn't be. It is just a key in a different form factor, programmed the same way, and the mechanical key part cut the same way. They are very expensive though.
Use a different dealer if unwilling to help, or purchase a blank one for a vehicle that comes with one as standard and find an independent to program it for you.
Don't be tempted to purchase one cheaper from the US or Japan, they don't work with European vehicles due to using a different radio frequency.