I looked at the Ray Iles chisels on the Old Tool Store, well, I say 'looked'. There wasn't a picture and you can't buy direct from the website :roll:
I also read a review a glowing review by Chris Scwartz, that stated that out of the six chisels he had "One of the narrow chisels (that 1/4" again) was ground initially out of square, and one of the larger tools (the 7/16") had some chips in its edge. Both of these needed a brief trip to the grinder before honing" - slightly off-putting.
But they did look like the only old fashioned mortice chisels. Most of what I've seen have been registered chisels which seem a lot less substantial.