Yes, that's basically it. You should follow the guide https://wiki.merproject.org/wiki/Nemo/Installing using the part "Dual-boot method" which will not flash your bootloader but just starts up the MOSLO installer. When your mmcblk0 is repartitioned, it will be exported to your linux PC via USB, then you can just untar the NEMO image to the exported partition. Then, unmount, and if you have already installed ubiboot, just boot it to the Nemo installation. The defaults in boot.conf already contain reference to the Nemo partition and kernel, if you have not changed them. When in Nemo, set up 3G or WIFI networking, login to shell and do "zypper ref; zypper dup" as root to get the latest updates. It looks quite slick with the new homescreen layout