There's not much exploration in Lonesome Road, but you do walk through the desolated areas.
Pro:
* There's lots of cool weapons.
* It's visually impressive.
* There's some powerful armor reskins.
* It's a great challenge, but not as gruelling as Dead Money or ammo depleting as Old World Blues.
Con:
* Most of the new weapons aren't so good against the toughest creatures in the DLC.
* The story is not as good as most people were expecting.
* It is very linear with very little exploring.