I normally use

\setupbodyfont[lucida]

to use Lucida as my body AND math font.  I also use

\usemodule[simplefonts]
\setmainfont[Myriad Pro]

to use Myriad Pro as my body font (when no math is used).  I would like to,
however, now mix these so that I can use Lucida for my math and Myriad Pro
everywhere else.  What is the best way to accomplish this?

Thanks,

Troy Henderson