Repro hoses do not have the "rough" texture of the original. When I stay rough it's relative to the current smooth surface. Same with the radiator hoses. Originals on both had a more lumpy, pebble-y (I'm struggling for terms here) texture.
As for using an original, an article in "Antique Automobile", IIRC, a few years ago written by a fuel system engineer suggested that they should not be used due degradation from age, and from additives in current fuels causing fumes to leak and possibly total failure. I have the article somewhere. If I can dig it up I'll post the date for reference if you contact AACA.
Scott