We've just had a new staircase in our extension (they're actually fitting it as I write). It's white deal with two short flights at 90 degrees and a landing in the middle. The room below is to be tiled and the room above solid wood floored (birch). We were planning to paint the bannisters but are not sure what to do with the steps - possibly use a varnish stain? Or is floor paint tough enough to withstand scuffing? What would be the best option here?