Unsexy for sure and little room to make your own style. Half the length of a standard straight but in some ways very much more restrictive than a custom straight. If I try to make a custom 8/8 and I make a mistake then end up with a 7/8 unless I tell you you won't know. With these to narrow won't work.

Just throwing out some numbers for thought but $400 USD for a custom razor would be cheap in my mind. Nothing special in the steel or scale material. Say the blade is worth 3/4 of that for sake of argument. Take that blade in half and you have $150. Not a whole lot of money if any for the maker at these prices.

I searched a little and these razors are say $40 and 7 day set in a box $150. I can't see much of a market for $150 dollar blades. Especially when a standard SE will at least work.

With that being said as a hobbyist I would be interested in the exact dimensions to make one for the sake of saying I did.

I think that someone must have make modern versions of these for themselves and fun but I don't see a market to support a reason to do it if profit is the point