Cleavers and sharpening steels can be a problem. Try to get a block with a few more slots than you have knives for. Then, if you pick up a knife in the future, you will have a slot waiting for it. There are some disadvantages to blocks , besides being potentially unsanitary3. With the blades hidden, it can be confusing as to which is the chef knife and which is the slicer.
Most blocks take up valuable counter space.
Wall mounted magnets solve both problems. Knives can be both out of the way and easily accessible. When removing a knife, do not slide it off the Magnet. Rotate the edge away from the wall and pull it straight out. This prevents scratching the blade's finish or dulling the edge.