I have some worries with one piece scales. In my experience they can warp. I say can because it isn't inevitable.
I also find that they tend to not have proper tension. This is because this style of scale is usually made with parallel sides. If they are made with a slight "V" it should help.
That being said I really like the artistry of your design. They are elegant in the execution. They are a little clunky for me, but some people prefer a thicker scale.
Thank you for sharing.