Just a quick video of testing InWorldz servers for a non-phys boat vehicle repeatedly crossing between two regions. You can hardly notice the crossings; if you watch VERY closely, there is a very small "bump" just as it crosses. Since I had no hair on the avatar on this test server, I added a "backpack" object to keep an eye on attachments as well. Also, about half-way through I switched the sit animation to another to verify that was preserved across regions.
