There couldn't be anything more hypocritical than a preacher telling homosexuals they are sinners, opposing gay marriage ("marriage is between 1 man and 1 woman", they say) then heading off to a swing club to indulge in group sex, fornication and adultery...
Even if your a more liberal minded Christian, you're still giving money to an organization that fundamentally opposes swinging in every regard, and would probably ban it if they could...
Being a swinger is a call to atheism.