Wing down is superior as it was pointed out, the 'throw-you-of-the-side-of-the-runway' vector (actual JAR terminology btw) is reduced on one wheel compared to two. In the 146/RJ you rarely see more than 5 degrees on during a wing down landing so the argument that it's uncomfortable for the pax doesn't fly (pun intended)
Anyone flying into LCY yesterday? Sure was foggy! We had to go to SND
Atreyu