At least for the moment. As cool as a skin as it is, and that it also includes a VO update for Ashe, I'm not that big a fan that anyone would get a second legendary skin.
Edit: Since I'm noticing a trend forming in the comments already, the old ass 'Legendary' skins don't count. They do not hold up to the standards we hold from today, and to limit a champions chances for an actual Legendary because they were shit out of luck to exist during a time of lesser production is understandably stupid.
Project Ashe is comparable to every other Legendary Skin that Riot has released in the past 3 years. There is a clear difference between the Legendaries of old, and up to date ones.