I know I have around 25 tins of Wallace flake somewhere buried in the cellar. It has been a long time since I smoked any but if memory serves it was very similar to University Flake and since the Univerity flake is easily accessible, I have been smoking it. Who knows when I will run across Wallace flake again but if I do I will keep one out to compare it to the Univeristy. I would be interested if there was a big difference.
When I first got the Wallace I smoked a tin and found it to be quite tasty, and if memory serves it was similar to University. It was years ago so my memory isn't great.