For sure. There are Olives all over the world and if you look hard enough you can find a picture of one. There are probably windswept examples of virtually every single tree known to man. If the OP wants to style his tree as a windswept that is absolutely his prerogative. However, know that windswept style is VERY difficult to pull off in a convincing manner. bonsai experts will tell you this. And much like weeping style, you will constantly be fighting the tendency of the tree to grow up. It will require constant wiring to maintain the shape. That is just my two cents.