I think tumble lubing is just fine. Especially if you shoot as cast.
It kind of lost favor with me for two reasons.
1st: Usually I figure out I need to lube some bullets when I run out and need some more right now. Waiting over night was a D'oh!!!
Then when I started sizing you have to relube them again after sizing.
Another day of waiting.
I suppose there is a work around for the wait. Maybe my toaster oven??
But I had moved on so never tried it.
Great way to lube when you have a lot to do with out sizing.
I still have a whole bunch of 115 gr swc for my 32 mag. I may not ever run out.