Its for both.  I recently logged a case because the new requested for field type does not work with the Cart API and was told it will not and they are not doing anymore dev on it and if you would like the new Requested For var type to work properly you have to use the new CartJS API.  My scheduled job is running in the global scope and I could use it so it does work to a point.  I have yet to get it to work when I add multiple catalog items to the cart but it works great if all you order is one thing in your script.  But that maybe UE, still waiting to find out from support.