I bought those from Anker with two cables in it and the USB-C end fits through the gap in my Apple Silicon case just fine (15 PM).

That’s a good choice because the 15 Pro Max is a tad bit smaller (less tall and less wide but thicker) and noticeably lighter than the previous Pro Maxes.

14 Pro Max, as long as you don’t mind the weight

For a feature they put so much emphasis on I think it is pretty underwhelming. I don’t expect this to evolve much either. Similar to the Dynamic Island on the phones - still of very limited use after 1+ years.