Man, I wasn't sure what to expect from this ship when I first stumbled across it in the 'Vampire Chronicles' fandom—it feels so niche compared to the Anne Rice classics. But the dynamic between Tony and Rudolph, with Tony's old-world weariness and Rudolph's... well, frantic vampire rockstar energy, can spark some weirdly compelling tension. If you're willing to dig, 'Twilight Symphony' on AO3 is a good long read that actually gives them both distinct voices instead of making Tony just a moody prop.
What I appreciate about that story is how it handles the passage of time. Decades pass, and their relationship evolves from a weird forced proximity thing into something more mutual, with Rudolph's chaotic influence slowly chipping away at Tony's isolation. The author clearly knows the source material, referencing little details from 'Interview' and 'The Vampire Lestat' that make the world feel lived-in.
For something completely different, there's a shorter, crack-treated-seriously fic called 'Blood and Vinyl' that's just a hilarious romp. It's all about Rudolph trying to get Tony to appreciate 80s synth-pop, with predictably disastrous and oddly sweet results. It's less about deep romance and more about the sheer absurdity of the pairing, which can be a nice palate cleanser.
The real trick with this ship is finding stories that don't just reduce them to 'brooding vampire' and 'flamboyant vampire' archetypes. You want something that engages with the fact they're both immortal, deeply traumatized beings from vastly different centuries, forced to navigate a world that's moved on without them. When a fic gets that right, it's worth the search.