Yeah, I've always imagined that swingers probably communicate very well and perhaps even in a clinical, straightforward way about safety and stuff like this exactly because
of the general preference not to involve emotions. I've never been to a swinger event but read a lot about them and safe sex was always mentioned. When sex and bodies are approached as part of a recreational activity or sport, so to speak, it makes sense that one would be diligent about the health of the "equipment."
And actually, when emotions are involved, it's easier to overlook these things if one is caught up in NRE daydreams and fantasies, and is afraid to hurt anyone's feelings by asking the questions they'd rather avoid.