Also as someone who's never touched splines before, I found it pretty difficult to replicate. The "a" from the screenshot looks fairly smooth everywhere (except possibly the upper-right outside curve), but I found that unless I got the positioning just right, I could run into some degree of "bumpiness". This may, of course, say more about me than about Raph's new splines :P.

If I wanted to try Raph's prior work on spiro splines for comparison, is there some way to do that that's easier than learning to use Fontforge? (When I last tried Fontforge, it didn't seem to handle hi-DPI screens well...)