I did the I/S Rad. pods on my Tourer.
The radiator I/S shroud is necessary to flow through the pods, if you want them functional, if you have it use it - if you don't consider getting one. The bike will run a bit warmer, but you'll run a little cooler. It's definitely noticeable.
It's a bear to install. I found using a couple of plastic putty knives (1.5") works well to assist the shroud past the nuts for the rack/stay bolts.