That's interesting Edouard, we were told the exact same thing recently, will it be a wet or dry el ni?o if it takes hold?

I'd never our bureau of meteorology or Government actually say this to the public before.
It makes sense though where I'm from in Oz, I am on the south coast facing Antarctica, but la ni?a for us usually means severe flooding and boy did it go crazy here in 2011 with a strong one in place after an el ni?o in 2009-10 that seemed to only effect the south eastern part of Oz, then la nina turned it from drought to severe flooding.
Where I live the impacts of either can be hit or miss just as you've suggested. I am actually living in what's classified as a temperate climate, but Jan and Feb 2009 during an El Ni?o, I witnessed the worst fires I've ever seen, accompanied by the worst heatwave I've ever experienced. This summer was very slow to get going and was el ni?o neutral but it smashed us after a very cool Dec. By mid Jan heat records tumbled, global warming wasn't factored in, but we need this recognised as going from cool rainy 21?c (70?f) to 44?c (111?f) in a matter of days and persisted on and off for 2 months before backing off. The weirdest thing about this entire thing that people didn't notice was that the daytime max during the 5-6 month period didn't drop below 20?c (68?f) and is now the longest warm stretch on record where I live. The general public still snort at these things which are so important yet 2013 was Australia's hottest year on record and I think the top 10 hottest years are almost all from this century and they think 2014 might beat 2013 which was a neutral year! So I agree with you completely when you say we just have to wait and see, ni?o's or not. June is our driest month so we won't know anything until the trend unfolds by late August.
Good topic, cheers!