So here is my first test that I've gotten working in LaTeX:
And for reference, here it is rendered with the "euler" package:
I definitely have more to show, mostly I just need work out a manageable scheme for splitting my single OpenType font file into separate 255 glyph encoding chunks to make ye olde TeX happy. The oldstyle figures are not new, they are just not normally the default in existing packages for AMS Euler. You may also notice I have increased the weight of some glyphs (like the brackets, parens, and plus in the above) as I think it makes the "color" a little smoother. Finally, I've been making rough fixes to the side-bearings and kerning. Anyway, I'd be interesting in hearing what people think so far.