Jake - not that I’m a fan of Winchester 94’s over Marlins, not by a long shot, but I have a Winchester 94 Big Bore on my bench right now with extraction issues, chambered in .375 Winchester.
Given a 99 in .375W in hand, even as much as I love Marlin leverguns, especially 1895’s in 45-70, I’d keep it around with intention of finding the appropriate moments to expose a loved one who might inherit it one day to the old 99 and the old .375 Win (stocking up on a healthy supply of ammo and/or brass to keep them well fed in the future). They just aren’t around to be had - I’d gladly save up for another 1895 in .45-70 though.