saaz doesn't have much flavor and since it has a very low alpha acid level, it would take relatively more hops to get the bitterness right. plus that ale yeast doesn't have much flavor.
...but i'm not going to argue with revvy. revvy knows a lot more than me.
Tap: Centennial IPA (SMASH)
Tap: Dogfish Head Ginger Saison
Bottle: Stone 11th Anniversary Black IPA clone
Secondary: Flemish Brown Sour Ale