I can really get behind this concept of NTS. It's all a matter of how adventurous they are. As they enjoy each other's antics, at the end of the day, and take their significant other along for the ride (whether in person, or in "spirit", rememberance, whatever) it's meaningful. If they don't, then it's just another boring free-pass anarchy.
Other guys beware because when think they've got Vi all alone to themselves, it's as if they're getting Erik as well. Heck, it sounds almost gay
And vice-versa, etc, etc. Don't want to sound like a misogynist, too.