You only have to remove the tanks for valve checks.
The valve checks are every 9k miles for the new 990's. The first one is very important, after that I'd say you can go from 9-13k miles, they don't change much after 20k miles. Much easier than most bikes, say a v-strom.
Oil changes are not bad, maybe 20 minutes every 3k miles.
Very, very high quality bike and components.
"Dad, can I get a motorcycle when I grow up?"
"Son, you can't do both"