I always have a few (4) 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.
White Sailor Professional Gear Slim (Fine) filled with Noodler's Ottoman Rose for one year. Refilled 5 times one month ago .
Black TWSBI Diamond 580ALR (Extra Fine) filled with Akkerman #29 Hofvijver Gris for 9 months.
Kyanite Blue TWSBI Vac 700R (Extra fine) filled with Noodler's Ottoman Azure for 3 months.
Green TWSBI Eco (Extra Fine) filled with Wearingeul Call of the Cthulhu for 2 months.
4 inked up pens