I got some of the 76 Sliders. I'll probably make some flat/angle mounts for them as well. I also have some pyrolamas as well.
Looking at the 76 Sliders before they came in, I thought they were be a little beefier or possibly made from some other material (like HDPE) rather than plastic. They are also a bit hollow on the sides. I guess it doesn't matter as long as they work and hold up over time.
Interesting tidbit, the nubs are designed for spirit product but they hold the new Dominator Proline items just fine! Now I can mix and match on the same holder. I saved the used 50mm tubes and they are nice holders for gerbs and flame pots if you shorten the cardboard tube