For my 2 piece rods, I use homemade rod tubes. They are cheap, and more importantly indestructible. I have accidentally slammed a few in the trunk door, and they are still in great shape.
Just go to your local Home Depot, buy a section of PVC that can fit your rod in it (2, maybe 3 inches if it has big guides), get 2 caps for each end, and you're all set! I bought 25 feet of PVC on clearance for $12, and with some caps for the ends, it was about $25 total. From this I made about 5 tubes, which work great.
A little spray paint, some stick-on decals, and they look pretty good too