The problem seems to be establishing just what the manufacturer stipulates, and how strictly that's interpreted as SOP.
A pal of mine had a friendly chat with a boss about holding the side-stick back slightly during the deceleration run. Such a small issue; a hangover from the old days. So what of crossing the controls on take off? If allowed at all, I'm sure it wouldn't be great handfuls of stick and rudder like the DC3 days.
There was a discussion a year or so back about crossing up upon landing. I was pleasantly surprised at a few more experienced posters being very for this technique. This was after a near wing-tip scraping landing with a major thump when the starboard wheels came down.