So far it seems to be doing well! We've reached 7,400 people on Facebook with 2,000 of them actually interacting (commenting/clicking), so I think that's pretty good.
We have a good frame of reference to measure this against as well. Last #WoTWednesday was episode 3, which we shared just as a regular image. One week in to that post, we have a reach of 16,000 people and 5,000 interactions.
I'll take a look at where the numbers are this time next week and see how the new format works out.