The fact people have to ask this because of "secure boot" is, in my opinion, some incredibly sad shit. Locking down hardware, or erecting barriers, bothers me a lot.

It should, they have added secure boot support in 12.3

At least heise (the publisher behind the H) that installing worked on a test computer with activated secure boot in their German article

http://www.heise.de/open/artikel/Die-Neuerungen-in-Opensuse-...

On their wiki opens use writes that it's still experimental: https://en.opensuse.org/openSUSE:UEFI#Secure_Boot

Try disabling SecureBoot in the BIOS. I was able to install Linux on my girlfriend's lenovo x230 with secure boot and windows 8 simply by toggling the option off.

I have it installed with Win8 and secure boot enable in a Lenovo machine. And in a secure boot enable dell machine without Windows.

Can't you disable secure boot in the bios?