Photoshop :: Strip EXIF Camera Data From PSD Files?

I often produce product images for clients that they then supply to their distributors and I prefer that my camera EXIF data not be included (none of their business). I use various actions to produce a variety of sizes and colourspaces (sRGB and CMYK) from the original PSDs. Unfortunately Photoshop seems to lack the ability to strip the camera EXIF data from a PSD file other than by copying the image to a new document. This is fine for a few images. But when you have 50-100 images it's not very practical.

Here's an action that would work:

Note: Image layers are not supported and the colourspace is lost so you will need to make note of the colourspace of the originals.

Action 1 : Open (flatten) and save the RGB or CMYK PSD files as Scitex Format (SCT).

Action 2: Open .SCT files, assign the now missing colourspace tag, re-save as PSD.

I can then add any metatags that should be embedded in these images.

But does anyone know of a plugin or post-processing utility that will strip selective metadata (ie: camera info only, not the metatags with the company info, copyright etc..) from RGB and CMYK 'Photoshop format' images?