> Question for the Deutsch HN-ers: Is this readable to your modern eye?

Generally, no. It is too confusing, since not only are many letters simply obtuse, some are mixed up with modern cursive writing. For instance, capital 'B' is pretty much exactly capital 'L', small 'h' is exactly 'f', small 'o' is 'v', and so on.

Fraktur for instance is much, much easier to read, since there is basically just one mix-up ('s'/'f'), it just takes some getting used to.