metal filaments are overrated simply for the sheer amount of post processing.

I must have spent an hour on this bloody stainless steel proto pasta stuff. And it still looks like pewter. Kind of dull gray.

It must look and feel like metal, 'cos some idiot tried to use it to poke molten plastic out from around a hot extruder. :-) (and what do you know - it melted lol)
We live and learn. But it definitely looks like pewter NOT stainless steel.

And if you print anything with any klinf od detail - how do you sand the crevices ?
Nah, I'm probably not going to bother with stuff you have to sand and sand and polish in the future.
At some point they'll release a plastic that just LOOKS like shiny metal without any buggering about. And I'll use that :-)