/Austin findfont 32 scalefont setfont 100 200 moveto (Hello, World) show
where Austin is a truetype (notice: TOTALLY NOT POSTSCRIPT) font. Run gv on this, and it's like, wtf, I've never heard of this Austin nonsense, fuck it, I'll display it in courier just to spite you.
ps2pdf -sFONTPATH="/path/to/ttfs" /tmp/a.ps
where /path/to/ttfs is a directory containing Austin.ttf, and /tmp/a.ps is the above snippet of postscript, and you get out a pdf file with Austin text.
It's one of those rare circumstances where fiddly file format conversion tools actually behave better than I thought I could reasonably hope them to.