I find that hard to believe. Sure you can get your filter off, but the oil mess will likely be a real pain with that thing.
I use a tray that fits under the filter and runs to left side of bike and drains into a bucket. I never have a mess! (slight drippings when you pull it away) so still no problem. if you look on my deuce in my avatar, you can see my spoiler, I did a whole lot of work to make mine look one piece, and actually bought a couple frame rail pieces to make just one look custom, and it does!