Despite all the above, when compiling with

>texmfstart texexec --lua test.tex

with test.tex containing

\usetypescript[verdana]
\setupbodyfont[verdana,12pt]

or

\definetypeface[Times][rm][Xserif][Times New Roman]
\setupbodyfont[Times,12pt]

the generated pdfs embed LMRoman font instead, while both fonts are present
in

/opt/context/tex/texmf/fonts/truetype/msttcorefonts

What's missing ?

Alan