Oh, no, Bill - another Fat Sam!
Et tu, Hildebrants?
Just as the fellowship leave Rivendell there is an illustrator's treasure trove of a description of their gear. It is said they went forward with little gear of war. Gimli's mail is mentioned, as is Frodo's, and also Boromir's shield. If Aragorn had sallied forth with one, doubtless that would have been mentioned. I believe that he would have been given one to use at Helm's Deep, for realism mainly, as well as a helm. Legolas and Gimli at least in my memory were kitted out at the Hornburg.
If anyone wants to make some more comments on the movie costumes, try
here! Don't you love it when people shamelessly promote the threads they started?!