Yes, there are situations where you may use the Custom Black in skates, however they are not the first choice of application. Often times the Custom Black is too wide in the mid-foot area to fit properly into the skate. The Custom Yellow or Trim-to-Fit Yellow will accomodate the skate much better.
There are customers that like running in the Custom Black even though this product was designed for low-volume tight fitting shoes. We have customers who prefer to run in the Green, Blue and Black. It's actually quite simple: go with the product that feels the best under your foot and fits properly in the footwear.
You can use either the Custom Black or the Custom Green for golf shoes based on the shoe style, type, and the volume inside the shoe. We recommend the Custom Black for tight-fitting golf shoes that do not have removeable insoles. The Green is recommended to be used with shoes that have removeable full-length insoles.