I called Canadian today to inquire about purchasing an Empress Lounge membership. I thought they would be particularly useful, since they now also allow access into AC's Maple Leaf Lounges.
(NOTE: I called earlier this year and was prepared to buy one at the time, but was told they did not offer MLL access).
Anyway, I was told that effective April 1st, Canadian was no longer selling their Empress Lounge Memberships (probably about the same time that they started allowing reciprocal entry with AC). I guess this is just another great feature of that infamous merger!