I think......the winged eyecups you are referring to will only work with the earlier generation SLC's. They changed eyepieces and the type that extend will not work with the newer eyepieces.
I loved the winged eyecups on my 1st and 2nd generation 7x30 and 8x30 SLC's. When I had them updated they came back without winged eyecups. When I called Swaro and asked in 2010 they told me those were not available, only the newer style winged eyecups were available. I have the newer style on both binos now, but I taped them into position because I don't twist out the eyepiece.