[Quoth]

There is always something new to learn!

Actually many of the fonts I have the Features button in Styles simply lists the font name, but I see on junicode it does show loads.
Still don't like the Irish style it has.

I shall experiment. It may be more use for source that's exporting as PDF for POD than ebooks as I expect compatibility to be low on older eink ereaders. I have a wide variety of eink and apps to test on. Three separate Kindle generations as well as various epub based ereaders, not all eink.

I'd decided ages ago that I'd only put fractional spaces and small caps on source intended for paper publishing, not ebooks. Indeed for paper, small caps needs a Character Style rather than paragraph, for stuff like BC, AD, CE, BCE etc.