I have carbon fibre cylinder head covers on my R1200GS. I don't know how effective they could be since I also have crash bars.
Yes I think protective covers would suffice for low speed or parking fall. I have seen some Moto-Guzzi that have small crash bars bolted to cylinders that may be an option. I like the bike and I liked the "James Bond 1200" It was expensive then and the new one probably will be as well.
Probably way more expensive, given the engine capacity.