PTGui Pro supports full HDR workflow - while it may not be the most efficient way, or give you the most control over your final image, you can literally drop a series of pano segments with multiple raw exposures per segment into PTGui and it will sort it all out, convert the raws and merge and stitch the images into a single, HDR pano. You can choose the blending method to be either true HDR (i.e., it will output a HDR, EXR, etc.) or Exposure Fusion (a la enfuse) LDR output.
Some people prefer to work this way, others prefer to use a batch processing HDR app, like Photomatix, to process their HDR segments first. A helpful workflow in this regard would be to use Photomatix to batch process each segment, outputting both a smallish JPEG with some default tonemapping, as well as a full res HDR file. You can then take the small JPEGs into PTGui, use them to perform the stitching to get good alignment without bogging down your system, and then create a template of the stitch. Then you create a new project, import the full res HDR segments and apply the template, taking advantage of all of the warping and alignment that was done using the small JPEGs.
Easy peasy lemon squeezy. HDREfex is coming along but needs some tweaking to be a true power tool. HDR Expose will perform this type of batch processing as well, automatically sorting out the relationship amongst a batch of images. Here is a tutorial:
http://www.youtube.com …M&feature=player_embedded
HDR Expose requires that all image sequences have the same number of exposures per sequence. Photomatix's sorting engine is more robust in this regard.
Kirk