How often do you jump? Only when you need to, whenever you want to or all the time?
When I need to. The inherent problem with contextual jumping (or anything contextual for that matter) is that the developers can't possibly assume every case in which I would want to jump. The level designers know this, and the levels themselves suffer from it. For example, there are pressure plates in the eurogamer demo. Can I jump over those? I'm going to go out on a limb and say no, though I can't say for sure.
Here's a quote from their dipshit project lead:
"If I give you the possibility to shoot the rope arrow everywhere, I will have to cut something. I will have to reduce our intention for the narrative. If it’s everywhere, the cost of it is to block your view, because it’s still a console. It’s still tech. By having a smart level design, by making sure that feels natural that here you can go – not scripted, but you check and if you feel that you should be able to do that and it’s there, the job is done. If it’s not frustrating, the job is done"
(yeah I know, I couldn't make this bullshit up myself).
I can't speak for how well the jumping will work, but that quote is pretty goddamn telling to me.