Multi-section rods have to be the way forward.
Ok they may be slightly more expensive to make, and marginally heavier.
I've never noticed a 'flat-spot' on any rod I've used, whether it be made of 2 sections or 6. I'm usually more interested with fighting the fish, rather than looking along the rod to see whether it has a perfect curve. If there is a flat spot, does it really matter?
With multi-section rods you can shove them in a drawer at home. More importantly, you can keep themin the boot of your car while you're at work/ shopping/ whatever, so the local chavs are none the wiser.