First off let me say, I'm a Stag and not a Cuck. I enjoy watching my wife having sex with other men (and sometimes women).
From my perspective, I think anyone that lets their wife take off or be alone with someone they either don't know or barely know is an idiot ! In today's world there are some really sick fuckers out there that can and will bring grief to a couple. And I don't mean "aw man....things didn't work out, she didn't enjoy herself" kind of grief....I mean you get a phone call and find out the love of your life is either in a hospital in serious or critical condition or dead !!!! As for playing while your in another room....what happens if the fucker pulls out a weapon, gags and ties you to a chair, then does things in front of you that hurts your better half ? God forbid but if something like that happens....you think things will end well for either of you ?
I know that 99% of the ...... guys post up on here is bullshit, but once in a while I'll read something and think, "Does these people not realize the danger they are putting themselves into?" When my wife and I play, we get to know the perspective playmate first. They aren't willing to go through that process, we don't play. And even then I'm never out of sight of my wife and (shock shock, gasp gasp) I'm ALWAYS packing heat. We've been in the lifestyle for over 20 years, have great fun, and enjoy a sex life that most people/guys only fantasize about (as evidenced by the bullshit I see some guys try to pass off as real on here).
You can have a fantastic experience with your better halves in the lifestyle, but my advice is BE CAREFUL when you do....your lives depend on it.