Any of your designs will work fine,have fun with the project.
Whilst on the subject,have always wondered why so many scale makers get fixated with using wood other than the obvious.
Is cheap, easy to work,readily available,some are drop dead beautifull for sure,but wood is not a good substrate for wet invironments,same go's for brush handles.
How many high end razor makers in the past used wood? (not many I think)
Why did they use use Bone,Horn, Ivory, celluloid, bakalite, plastic (perhaps because they are water resistant?)
Am questioning the use of wood for scales,the practicality of wood (non stabilized/plastisized),just curious.