OpenSUSE EFI boot from USB on iMac


While running the installer of OpenSUSE on some other machine I noticed that ELILO is provided as a bootloader option.

How feasible is it to run OpenSUSE with an EFI bootloader?
I heard there where some hardware problems with doing so.

If I’d install OpenSUSE with ELILO to my pendrive, will a bless command let me boot from it?

Can I install OpenSUSE with both GRUB and ELILO? It would be cool to make a bootable disk that runs on both Mac and PC.