I like it a lot. Even more so than Autumn. I don't know why it hasn't been more popular, just its own bad luck, I guess.
It has sort of a California cheerleader vibe to it but not a strong one.
You do have to be careful with middle names so you don't end up sounding like a Yankee Candle fragrance or a feminine hygiene product or even some new variety of vegetable or fruit, or a makeup color. No Summer Dawn, even though that does seem to be fairly common; no Summer Rose, Summer Brooke, Summer Skye or Summer Joy even.