Yeah. Same with snooker cues. Traditional technique doesn't even use a lathe to create the thing in the first place. So, you sight down it, and that's how you tell if it's straight.
I have an early cue by Scott Whisler that I bought a while back. When I got it, I tried rolling it, an got all spun up about the way it rolled, and was going to get my money back and all that... when you looked down the cue, it looked straight, but it rolled weirdly. Turns out that this was a stick with which he had experimented with a compound taper in the butt, and it would never roll like a conventional butt.
I will say, however, that this whole 'Southwest cues have a roll' line of discussion is a little perplexing. I had always been under the impression that, when properly sealed at both ends, and with a quality finish applied, that a good stick would be nearly (99%) impervious to anything outside of outright abuse. No?