NetBSD-7.0.1 on the BB

I would like to try the NetBSD-7.0.1 on the BB, however the NetBSD ftp
site has quite a few images for evbarm and it is not clear to me what
they all do.

Is anybody usning NetBSD-7.0.1 on the BB? What is the simplest way to
install NetBSD-7.0.1 on a MicroSD card keeping the eMMC preferably
unchanged?