Allow ICC Device Link profiles for grayscale spaces

Simple linearization Device Link ICC profiles works like a charm if the original colorspace is RGB or CMYK.

We can choose it from Image->Adjustmens->Color Lookup.... (if we copy those profiles to system folders, they are also available from Edit->Convert to Profile... menu)

However it is not enough: these linearzation Device Link profiles are extremely useful for grayscale images, but Photoshop do not allow to use them.

I think everything is programmed for it, just need to enable the usage for users. It will be a big help for us.

It would be nice to put this function into the Image->Adjustmens->Color Lookup.... menu, so we can choose our profiles from the local drives, instead to put them into the system's icc profile folder.

Thank you,

Tamas