I recently was assigned to photograph HDR images of the Father Ryan Arts Center in McKees Rocks where I am the contract photographer.
This image was shot normally as a 9 stop HDR. I processed the 32 bit file in Photoshop, saved as a TIFF. Next I open the image in the Photomatix stand alone program and process the image there. I usually use the Photoshop plugin. The image was then tweaked in Photoshop. I like the results, they are comparable to what I have been able to achieve with the plug-in.
I learned this process from a student in my HDR program which was presented to the Pittsburgh chapter of the American Society of Media Photographers (ASMP).
Get 20 professionals together with a copy of Photoshop and you are bound to learn something even if you are the teacher.