G-free pie crust

Before I forget the made up recipe:
3 tsp sugar, 1/4 tsp salt, 1 tsp cinnamon+
1/2 c almond flour
1/2 c rice flour
1/2 c sorghum flour
1/2 c potato /tapioca flour blend
mix.
1/4 c shortening, in pieces
1/4 c butter, in pieces
mix.
2 T apple cider vinegar, cold
1 large egg
mix
1/4 c ice cold water to form dough.

The beauty - you can't over work it because there's no gluten!
The downside - browns easily because the sorghum and cinnamon already give it the darker color to start with.