I have always tapped both soft and sugar maples over the last 40+ years I have been sugaring. Yes, there is a chance of the soft maples budding out enough to create buddy syrup, but I have found that usually the sugar maples are only behind by a very few days. I have more variation in sugar lots depending on how they face than in the species or trees. The benefits of the extra sap throughout the season outweigh the little lost sap at the end in my experience. There are days that the soft maples will run. when the sugars will not thaw out enough to do so. So in the end it all balances out.