Currently mine is on Progressive 422 on the rear and my wife rides with me quite often. She is 100-105lbs and I am down the full 2". No problems with rub however if you can, go with air so you can tune a comfortable ride for you both. I plan on getting mine done this week.
JD installed my air ride this morning.... Very cool guy. When it's not 106 degrees outside like it is now, let you know how it is with the lady on the back as a difference.