I would not think the occasions for Skype would arise until some of the more fundamental aspects had been established.  Establishing that there is some potential is more important, and Skype allows a relationship to be maintained, but not established.  However, I know that many like to rush, and let it be so  I would rather see myself on an airplane for a brief encounter of one afternoon than spend a long time on Skype.  .  For the part about the 'dirty business' on Skype, it is too horrible to think about, if someone wants pretty polly they can pluck it from the tree in their own garden.  Their domain is the shadow, and shadow players cannot escape the twilight.  Overall, I would not engage on Skype until there is interaction on a day-to-day basis and the relationship is predictably moving in a favorable direction.