I haven't, I have not even tried LocalBitcoins (I've checked the site, but I am not willing to sell under the market price, I would rather buy something directly).
LocalBitcoins sellers get higher than market price, not lower.
About this other site, I do not like that they give very few information prior to registering... I cannot even find the list of currencies supported, nor I have an idea of how many local buyers/sellers could I find there (and if they are trusted).
This is a new site with certain advantages of LocalBitcoins. Of course the volume is low. But, signing up does not cost you a penny.
