David, I'm a huge Lightroom and PS6 user (I enjoy post processing as much if not more than tking the actual photos) . I do not recall a dehaze slider. Matter of fact I just looked for it. Where is it located? I'd love to try it out. I on the other hand use the clarity slider quite often as well as the sharpening slider under the Detail adjustments.
Dehaze is found in the Effects panel group. Also it is found wirh any of the localized edit tools (adjustment brush, radial tool, and GND).