It's actually really easy to check, and when someone told me how, I slapped my own forehead for a week!
Rest the bike on the sidestand. Remove the dipstick, wipe it clean, and place it back in the engine (not screwed in). Raise the bike to vertical for a few seconds, then rest it on the sidestand again. Remove the dipstick again, read the oil level, service and repeat if needed, tighten the dipstick, leak and ops check, and go ride!
This method is at least as reliable as trying to hold it vertical while pretzeling around to reach, read, and replace the dipstick by yourself.
CB