Hi Marv, thanks for your thoughts.
Yes, there are a lot of ways to skin this cat! But I think these work perfectly for most of my needs. I am mostly milling non-ferrous materials on my mini Mill.

I have used the oil trick with capillary action as you suggested, but I'm not entirely satisfied with it.

The magnets when they are attached to the vise are so far inside the aluminum that I doubt they would attract ferrous swarf.

With all due respect, it strikes me that you're overthinking things a tad! 🙂