When I first heard about this mod, I thought that it changed the way that physics in the game work, and I let Anna know that it would not work. There are forge mods that do that, but they also require forge to be enabled on the server.
When I further look into this mod, it looks like it just changes the way the items are rendered on the client. So this mod should work fine, and it would be allowed on Famcraft, as it does not give an advantage to the player.
As always, thank you for checking with us!