I have never had an issue using "the hard way"
( well minor ones when "nouveau" was FIRST USED as the DEFAULT installed )
I have never been a "fan" of the "one click" install or of using yast
the .run is what i have been using for years, since 2005 .
Also the "blacklist" of the nouveau is done automatically now in the .run ( at least in the 290.??? and up)
rebuilding the boot image is still recommended for the FIRST install when switching TO the proprietary for the VERY FIRST time