I always have a few (6) pens inked up and ready to go. There is no official rotation, just pens I happen to have filled with ink for one reason or another. These are those pen and ink pairings.
Kyanite Blue TWSBI Vac 700R (Extra fine) filled with Noodler's Ottoman Azure for one year. Refilled 2 times 5 months ago .
Aubergine Lamy Al-Star (Extra Fine) filled with Noodler's Purple Heart for one year. Refilled 2 times about 3 months ago .
TWSBI Micarta (0.5mm CI) filled with Kyo-iro #01 Gion's Cobblestones for 6 months. Refilled 3 times 2 months ago .
Plum TWSBI Eco (Extra Fine) filled with Akkerman #17 Staaten-Generaal Rood for about 5 months.
Teal Pilot Custom 74 (Fine CI) filled with Rohrer & Klingner Blue-Eyed Mary for 2 months.
6 inked up pens