I was just listening to this week's Star Wars Action News podcast, and during their Hasbro Q and A one of their questions is about the availability of the San Diego Comic Con exclusives. According to the answer on there, from Hasbro, all three (McQuarrie Obi/Yoda, R2-KT, and Shadow Scout) will be made available online as well. I don't know how reliable Hasbro's answers are, or if anyone wants to take chances, but it does sound like these are supposed to be available online. I hope so.
Edit: If anyone is interested in hearing, the Q and A is around the 36 minute mark in the podcast.