My issue (and why I like the domino so much) is that I’m rarely joining woods of the same thickness. A recent project saw me building a corner-style utility table for SWMBO’s craft room. Just hacked up construction lumber with a hardboard top (designed to be damaged from use and easily replaced). Some weird angles that I wanted to incorporate from a utility standpoint meant that proper M&T would have been a nightmare. With the domino I just lined out where I wanted the center of the tenon to sit and adjusted the fence until the cutter was in line and boom, done.
Now, this was not fine furniture, so being off by an 1/8 just wouldn’t matter. But it was certainly the easiest and fastest way to build a very stable frame for the top.
I’ve actually become a fan of loose tenon joinery period, even if cut by hand. I think it offers a lot more flexibility than proper M&T (assuming no through tenons, of course). In the end, in my mind, joinery is mainly about strength. Whatever gets you there is good. 👍🏼
Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".