Hans,

I can report it doesn't work here. And I am pretty up-to-date with  
GWTeX, although this makes me want to try updating today. This:

% output=pdf

\usetypescript[postscript][\defaultencoding]
\setupbodyfont[postscript,10pt]


\starttext

\input tufte

\stoptext

Gave me this:

(/usr/local/teTeX/share/texmf.local/tex/context/base/type-akb.tex)) 
kpathsea: Running mktextfm utmr8t
mktextfm: Running mf-nowin -progname=mf \mode:=ljfour; mag:=1;  
nonstopmode; input utmr8t
This is METAFONT, Version 2.71828 (Web2C 7.5.5)

kpathsea: Running mktexmf utmr8t
! I can't find file `utmr8t'.
<*> ...:=ljfour; mag:=1; nonstopmode; input utmr8t

Please type another input file name
! Emergency stop.
<*> ...:=ljfour; mag:=1; nonstopmode; input utmr8t

On Dec 21, 2005, at 5:38 AM, Hans Hagen wrote:

> \usetypescript[postscript][\defaultencoding]
> \setupbodyfont[postscript,10pt]