----- you seem to presume (as did Mike Biel) that from one reel we get two reels. In a world where we could store each item according to its individual climatic requirements, this would be natural. However, why not keep it on one reel, only shuffled according to Eric's rule (1). This would only mean to stick end-to end that which has already been necessary work for the transfer process.
The question then becomes a combination of "tails out?" and "acetate or polyester out?". I would propose SS-prone out, because that provides the largest radius of curvature of that part of the pack.