
An enhanced version is available with LX Fonts. It is mostly a math enhancement.

[Click on text example to enlarge] [PDF sample]
[LaTeX source of PDF sample]
\renewcommand*\sfdefault{lcmss}
\renewcommand*\familydefault{\sfdefault} %% Only if the base font of the document is to be sans serif
\usepackage[T1]{fontenc}
\normalfont
\slshape
Computer Modern Sans Serif Quotation is available as Type 1.
http://mirrors.dotsrc.org/ctan/macros/latex/base/slifonts.fdd