I think if it has meaning for you and you like it, go for it.
If I saw that I would have no clue what that was
Wife, Girlfriend & KeyHolder My boys are Wearing: Jail Bird (cm) Steelheart (a) Owned Devices: MM Jail Bird (x2), MM Spyder, MM Locking Double Cockring, Steelworxx Revenge Click here for Our blog & Podcast
Tattooing a logo would be generalizing your feeling towards each other
Instead, a tattoo should be of highly personal references, which only two of you would understand
It should be absolutely meaningless for others
Stay chaste. Make your wife & life happy. Forever.