Nope, it has nothing to do with anything on SciFi: Torri, Amanda and Rachel are mentioned in an article on Netscape Celebrity called Sexy SciFi Babes:
Of course we can't leave out some of the Sci-Fi Network's other leading ladies - Amanda Tapping of "Stargate: SG-1," who first got hersci-fi feet wet with "The Outer Limits" and "The X-Files," RachelLuttrell, best known as a member of a fallen alien world on "Stargate: Atlantis," and last but not least, Luttrell's co-star Torri Higginson, who takes great pride in playing the woman in charge on her hit show, Dr. Elizabeth Weir.
Says Higginson of her character, "What I originally liked about her most is that I thought her politics were sort of similar to mine, which is fun to play in a genre which usually kind of embraces the whole Manifest Destiny ideas, which isn't one of my politics," she tells us. "I liked that she was anti-military and really fought for a universal, global community. But when you're dealing with aliens that want to suck the life out of you, politics shift a bit." Indeed.