Well firstly it depends what PI gloves you're talking about. Secondly its a good bet to just try them out. I use XC gloves generally (and have used Specialized, Troy Lee, Fox, Raceface, Thor, THE, Fly, 661 in the past) and some are better than others but none were total shit and none were way better than the rest. I usually find either the stitching or mesh around the fingers breaks through first, or the terry cloth sweat wipe on the thumb can wear through.
I've also used Hebos, Try-Alls and Mechanix gloves, Hebos being my favorite of those 3. Mechanix were really tough but I miss having a sweat wipe section and did't fit me as well as the Hebos. Try-alls were pretty average.
They may fit you really well, but other people don't get on with them. Maybe look at some women specific ones?