Wtf is a no strings attached nikah? These horny cave dwelling converts, Desis and Arabs have become too much and are playing around with the deen to suit their desires.
If you make special clauses before a nikah that both parties agree to, like not living in the same home, splitting finances, etc. The nikah is still a nikah, not this NSN bullshit. Also, a NSN would have to be hidden from family, as no wali would except his daughter getting marriage with no safety net and the fact that she may be divorce within a few months once the couple get tired of each other. Marriage is for creating lifelong unities and happy, healthy families.