I like the concept. I like the addition of the purple bar at the end of the the new one, it brings things in more. They don't feel like they're just floating out in space.

With the purple bar there (which is good for the balance) have you tried right-aligning the signature, address, etc. They still feel a little detached.

I agree on justifying against bar on the right. Here is what I am presenting them for the back of the bookmark.