I have a dimmable transformer for under cabinet LED lights. If my transformer were not dimmable, I would not be able to dim the lights. But even with the dimmable transformer, I can't dim the lights (with a switch). The entire thing makes my head hurt.
Zooz and Inovelli have both told me their switches are not compatible.
However, over on this thread, Sebastien gave a solution. I have not yet implemented it...but plan on doing so once I completely get my head around it - I don't like doing things before I fully understand them.