Yes you still have to create the value typed field, but if you have 2 or more fields to add every time, you can save work by creating just one. If you have to add just 1 field, then of course you don't gain anything. In that case, I'd use quickmodel, it's easier / faster to add fields that way:
#u :Customer
Field1 int
Field2 int
#u :Order
Field1 int
Field2 int
etc. (type each line separately)