This has come up a few times in the past...

The solutions are varied but basically it comes down to these issues...

Weight that is a real kicker and honestly sometimes looks have trumped function even in Vintage scales, basically to have really fancy scales you put up with an unbalanced razor...

The flex, and that has been dealt with for two ways..

The "stone" is mounted in pieces on a flexible backing

or

The wedge and pivots are made of a flexible material

You might take a look at some of the Vintage MOP scales for ideas too..

Now the fragile nature of these types of scales can not be over looked, the scales are suposed to protect the delicate edge, but again to have the fancy scales that function would be negated...