I measured the circumfernce of my Gitzo GT-3541 tripod legs tonight and calculated the diameter. I came up with 1.25-1.27".
Therefore, I assume that the 1-1/4" Nikonians leg wraps will fit the GT3541, GT3541L as well as the GT3531, GT3541LS and GT3531S tripods.
When you look at the chart the 1-1/4" wrap fits the older series so it is to be expected that the 1-1/4" will work on the new models mentioned above.
I will leave a follow up message after I get them installed.
Have a great day!