455 has a far higher chance of getting one with a mediocre accuracy than 452, that is its biggest problem.
If you read rimfire central, you get a lot more threads of people with mediocre 455 discussing accurasing it. Far few people needed to accurase 452.
At the same time, the switch barrel system did not add anything useful. Most countries do not have a limit on how many rimfire guns you can have. If you want a 22lr and 17hmr, just buy one each. 455 sells on the idea that you can have 1 gun for the two calibres. In reality it does not work that well.
Firstly, unless you buy a combo set, your second barrel will not be matching to your action. You will need to do a lot of work to make the headspace fit perfectly. Most people cannot be bothered doing this.
Secondly, changing the barrel will change POI. Unless you live on a farm, changing barrel means another trip to the range to sight in the scope. If you are so poor that you cannot afford to buy another gun you probably cannot afford membership and the gas money to the range on frequent basis either.
As result, most people just leave the gun with one barrel. I have a 17hmr 455 Varmint, I have a 22LR barrel which I just cannot be bothered putting on for this reason.
This is why despite the promise of revolution, 455 turned out with a far weaker following than its predecessor.
It is still early days for 457, but based on what I have read of people reviews:
1. the expensive variants are gorgeous looking.
2, 457 is no more accurate than 455.
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