I am not a huge Skype interview fan . . . it's perhaps a half-step up from an phone interview, but again, not best as in person . .
but if in person is not an option, then skype may be a good option.
(I would recommend, if you have not used skype before . . . I would recommend doing a trial run to get to know how it works . . . best lighting, best angle to use . . . for example, I have to adjust lighting or not wear glasses, or, all people see is the computer reflecting off my glasses.)