Skyliner is very nice, but it only runs until 10:30 at night. This comes in to play if you attend the Tuesday night EMEs at Epcot. On those nights, if you stay for the duration of the EME (11:00) you'll have to take the bus back to the Resort.
On the last two Epcot EMEs when attended, one in October and the other early his month, Pop shared buses with AoA for the return from Epcot. Additionally, we had shared one MK EME night in October.
Further, it is a common misconception Pop/AoA do not share busing (another popular Blog states only the All-Star share busing). They have been sharing busing to MK, AK, and Epcot more often than the All-Stars. While it doesn't happen much (usually mid day or late in the evening), it seems to have increased now the Skyliner has opened.
We'll be back down the week of the 9th and will update further.