Ibex doesn't shrink.
If it does shrink, cosmic forces are in flux. Serious, I've got about 15 pieces of Ibex and LisaSH has a gazillion, and neither of us has shrinkage issues... except one thing.
My older Switchback never even said "boo". Just my one new Switchback I got in May.
Ibex is good stuff! (wash in cold, air dry) I wash my undies and my cycling capris after every wearing. No shrinking. No pilling. No problem!