Indeed! I'm making a pumpkin saison with the Belgian saison yeast tonight. I have very high hopes for it
Aside from that, in keeping with the Belgian tradition their recipes changed over the years based on what they could get their hands on. They have a tradition of making good beer, but not being married to any particular ingredients, they more generally relied on how to get the best results out of what they had to work with. The Belgians were innovators throughout history in terms of brewing.
So it may not be true to any traditional style but why not?