its not that bad. My Blued Blackhawk rarely gets cleaned and still has 100% blueing after years of carry. the only blemishes are the cylinder turn line and some small specs of spray paint on the back strap. if anything stainless/nickle will more easily blemish than blueing will.
But one complaint about a blue gun i do have is that a lot of the new blueing jobs are shit in the last ~20 years. most companies are not taking the time to put a good polish on beforehand.
If blueing was as fragile as people think it is it would have never caught on in the first place. before blueing/browning rifles/shotguns and muskets were kept unfinished in the white. that's why in old manuals, songs and stories you'll here about soldiers "keeping their muskets brite".
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