I have both and will try to get a pic of them together in the next day or so.
Edited to add: Took a few quick pics but don't feel up to uploading them to a server or photo hosting site. If you'd like them, email me, and I'll reply with the pics. Your email is not accessible.
I think the choice depends primarily on use. If you want an all-around camp/survival knife, the BK-7 is hard to beat for the price. If you want to do more chopping/limbing, go with the BK-9.