Replacing Sidi Velcro
 

I've got a pair of Sidi Dominator's that are in good shape, except for the velcro. Looking at the shoe I see I can remove the stitches and take off the old velcro and sew on new straps. Did some hunting on the web and couldn't find replacement velcro straps. My guess is they don't exist.

Has anyone replaced velcro on shoes?

Not on shoes but on other gear. Fabric stores (like JoAnn) are good sources for Velcro. Some is even adhesive-backed.