if you really want a sans math font hvmath is probably a candidate (as is informal)

Are you talking about this?

http://www.micropress-inc.com/fonts/hvmath/hvmain.htm

If I were to purchase the OTF version of this font, would I be able (fairly easily) in ConTeXt to typeset my entire document (text and math) using the sans serif Helvetica font? Is that something that would have to have a great amount of work done in ConTeXt to setup, or is it "ready to go" since it's in OTF format?

Troy