To sum it up in three words, Sedley is a simple, refined and fresh summer/spring fragrance.
It shines in the heat, and projects well for the first few hours. I've had plenty of testing on the beach, and have received my fare share of compliments, even after taking a dip. Wouldn't place it above le beau le parfum as a beach fragrance, but it has better versatility than the latter.
For some people, the price is a turn away, so if you are on a budget, but still want to own a PDM bottle, choose Percival/Greenly (for a similar fresh fragrance) or Sedley (for a great first pick into niche fragrances).