So I'm curious if there's something in OpenBSD that's similar to the "mount -o bind /dir1 /dir2" to make dir1 appear where dir2 is.
I seem to recall a mount_nullfs but don't see it in the latest OpenBSD. Please note that I'm not trying to start a flame war, so there's no need to make Linux comments. BTW, the vnconfig manpage should probably indicate that the image need not be a file, you can use a slice/partition too.