Yes you should be able to order as a spare part directly from Canon. Years back, after the HF-G20 was released, I wanted the 'new' lens hood with the flip lens barrier to use on my HF-G10. I just contacted Canon Canada (Customer Service I think) and ordered it over the phone. Fitted perfectly and when I sold the HF-G10 (after upgrading to an HF-G30) the buyer was delighted. Can't recall the part code or price (didn't keep the receipt) but it wasn't that much. I know the HF-G40 uses the same hood and I’m pretty sure all subsequent HF-G models do (XA series also), so I would think Canon would have it in stock as a standard part.
