Not all printed pattern vinyl applications will require a laminate. The purpose of these products is to protect the printing form scratching and fading. So generally an indoor application will not require a laminate. On the flip side you will almost always want a laminate for an outdoor application, unless it is very short term.
We carry two different grades of laminates. There is not a huge amount of difference between the two. The Economy grade will give UV protection for 3+ years and the Premium grade will give UV protection for 4+ years. They have very similar characteristics except the Economy grade has a matte finish and the Premium grade a gloss finish.