I'm hoping to dip into these waters eventually. I tried using the HEJI fonts with kind assistance from Konstantin Heuer (who has been working on updating microlily), but without much luck so far.
I have developed one microtonal score so far (mostly I write electronic music for which scores are not needed), and since it's a quite minimal piece with only seven pitches, I opted to annotate the score with offsets in cents on the first appearance of each pitch, and added a performance note section to document the associations between the pitch offsets and the actual ratios I intended.
I would like to use microtonal accidentals at some point, but the fact that there are competing styles (Helmholtz-Ellis, Johnston, Sagittal, ...) is concerning since it's hard enough to find performers who will even recognize the various notations and interpret them correctly. So using cents offsets, in this particular case, seemed like a more "objective" way to indicate the pitches. But of course this is a matter of taste and preference.
- Dave