I do hope there is climbable objects and ladders not just a loading screen, in FO3 and NV I always wanted to be able to climb up on low hanging roofs to loot the dead raiders that would be on roof tops. Also it would be good to be able to climb up out of reach of some creatures and it would also svck to find out that some can climb up after you.
But with that in mind I do hope they have not made another parkour game.