Staple some plastic sheet to your wall, behind the lathe. White board or similar works well. If it's close to the wall, eventually you get a nice line of coolant smear. Do as someone else said, bring it off the wall 2 or 3 feet, and angle it about 20 to 30 deg. Takes up space, bit if you use it a bit, it will make your life much more comfortable getting around it, accessing the swarf from behind, roping up or changing coolant, etc..
Heaven forbid you blow a fuse and need to access the back.
Oh, also put a wall protector along the bore axis. Nothing worse when you use compressed air to blow out a barrel, and you get a lovely spray of coolant swarf on your wall because you forget to use a rag at the other end to catch it.