From my website's "
Decklist" section:
On Fetchlands: I think you should run a mix of only Misty Rainforests and Verdant Catacombs, to disguise you being Elves for as long as possible. I consider that +EV over spreading your Fetchlands against niche interactions like Pithing Needle, Predict or Surgical Extraction.
It did matter for me at Eternal Weekend, where I went Misty Rainforest into Bayou+Deathrite Shaman on turn1. My opponent afterwards told me tha tit significantly changed the way he played his first turn.