Yes, what fits best really depends on what you're actually looking for. Sure, it becomes a floor wall by using floor planks, because that's exactly what it is....
I'm very satisfied with the floor we have on the wall in the new bedroom, just lively enough. However, I can absolutely see the appeal in a much more lively appearance, but that wasn't what we wanted in this case. But it might very well be like that in another part of the house.