As JohnTheTexican said, ". . . when I bought a green and green linen FBM, it wasn't sold as a "Leprechaun Edition," it was just one of many possible combos you could order from the Busse website."
AFAIK the only ones that have been called "Leprechaun" models when first released were the green-coated green linen Game Warden and Active Duty models. And I'm not sure if the old green linen is still available from the Busse Custom shop - I tried to order a set of green linen scales a while back, but they weren't available. Perhaps Green Linen has gone the way of Snakeskin and Tigerhide . . .