Note: Maple extract, which can be purchased in the spice section of the supermarket, contains the essential flavors of maple syrup, usually diluted with alcohol. Maple syrup cannot be used as a substitute. Products labeled "maple flavoring" usually contain imitation or artificial ingredients.
Preheat oven to 400°F. Line a large baking sheet with parchment paper or coat with cooking spray.
Combine whole-wheat flour, all-purpose flour, oats, 1/4 cup sugar, baking powder, baking soda, salt and cinnamon in a large bowl; whisk to blend. Using a pastry blender or your fingertips, cut or rub cream cheese and butter into the dry ingredients. Add oil and toss with a fork to coat. Add pear and 1/4 cup nuts; toss to coat. Mix buttermilk and maple (or vanilla) extract in a measuring cup and add just enough to the dry ingredients, stirring with a fork, until the dough clumps together. (It will be sticky.)
Turn the dough out onto a lightly floured surface and knead several times; do not overwork it. Divide the dough in half and pat each piece into a 7 1/2-inch circle. Cut each circle into 6 wedges and transfer to the prepared baking sheet. Brush the tops with the egg glaze and sprinkle with the remaining 1/4 cup nuts, pressing lightly. Sprinkle with the remaining 1 1/2 teaspoons sugar. e the scones until golden and firm to the touch, 20 to 30 minutes. Transfer to a wire rack to cool slightly before serving.