No, I continue to use a .125" wide front sight. The ISGW rear sight does require a front sight which is approximately .100" higher than the standard FA rear sight would require.
The ISGW sight does have much finer adjustments than the standard one, and that's what I was after in this case.
One could also mount the adjustable width hooded front sight if they chose to do so, and this would be a desireable thing to do for a Hunter Pistol / Field Pistol Silhouette gun. However, in my case, I use this as a holster gun for groundhog hunting and such, so a hood would not be practical.