So we spent the afternoon with the tattoo artist (who was massively skilled and very professional) and now FI has a tattoo!
He's delighted with it, I really like it and think it'll be very sexy (when it stops bleeding), and he was very grateful that he waited to go with me - I found a great artist, a very reputable and safe shop, and we had time to discuss the best design/location. Plus I held his hand the whole time, and went and bought him snacks and tequila to do shots halfway through!
We went in thinking it was going to be just black and shades of gray, but the tattoo artist really recommended doing gold and silver to replicate the Officer's Eagle Globe & Anchor logo. FI thought it was a good idea, and so I agreed, and I'm so glad! It turned out great!
(Don't mind the shades of red - that's blood. It'll be mostly silver/gray with certain parts - like the anchor & the continents in the globe - are a light gold with shading of gray)