In most cases, it's the keys bottoming out rather the switches. Guy in our office with a membrane keyboard who smashes the keys into oblivion is far louder than the two mechanical keyboards in the same space.
I'd recommend to get used blue and try it out.
I use green switches with o-rings in a semi-open office layout and the only people who have ever noticed it are other mech enthusiasts. Browns with o-rings would be even quieter than greens.
Still I like the newer quietened version, so I'm considering buying some more for my home keyboard (it is an identical model).