Even not getting peculiar intro or outro, Phase 4 share an unique tag throw even with Alpha-152 (the same of Kasumi, even in this case doable starting the throw with both Phase or her partner Alpha).
Sorry I think to not have been clear, in my previous post I was talking of Last Round. In LR, Phase 4 and Alpha-152 have an unique tag throw (that is exactly the same that you saw between Kasumi and Phase 4).
By the way, Kasumi and Phase have also a peculiar intro (and outro too).
Lol, Shacknews made 3 streamings of 2/3 hours each one on Last Round in the last weeks XD Fans in chat requested them to see peculiar things (as outfits or tag teasm) and they were so nice to listen them and showing what they wished.
In the media section you can see the third one where Mr.Wah offered to partecipate for playing the game and show even the competitive side of it (of course reviewers can't do it if don't know the series, so I think that they were already doing their best).
By the way I think that in that streaming it was never showned a tag between Kasumi and her clones. I can give you the twitch link of the right streaming of Shacknews, but I believe that will be for you super laggy for technical problems of Twitch.
This was the link of the streaming, but I'm not sure if they replaced the video with another one of them (seems to me different but navigate inside it is a pain for me, so sorry but I can't confirm it): http://www.twitch.tv/shacknews/v/3718343