[psychtoolbox] Matlab Data Aquisition Toolbox + Psychtoolbox

Has anyone tried to use the Matlab Data Acquisition Toolbox
(http://www.mathworks.com/products/daq/) in combination with the Psychtoolbox for
Windows ? In particular, has anyone attempted streaming A/D conversions while
simultaneously running a Psychtoolbox screen animation loop ?

We want to use Matlab/Psychtoolbox to control a visual search experiment:
monitor eye position, and branch to image stimuli in response to eye position
within a video blanking interval. I thought that perhaps I could avoid writing
.mex files for streaming A/D by using the Data Acquisition Toolbox.

Just checking, before we spend the $ on the Data Acq. toolbox., to see if
anyone has tried something like that and noticed problems.

Allen