Anyone interested in learning more about this L-tenon application can check out the FW #254–May/June 2016 Issue (p. 54- 59), including a wooden/aluminum L-tenon variation and a plywood version. After seeing the sample builds employing these tenons in the article (including large scale cabinets, chair, etc.), I am convinced that this kind of L-tenon has its role in more than just carved boxes.
The article offers other advantages of this kind of tenon. It certainly gives me food for thought next time when I approach another mitered project with dominoes as the joinery.