I feel like I have never had a satisfactory answer on this.
My experience has been that there has never been a solid stance by the WTS on cigars.
I do not have the CD-ROM installed right now but for a long time I could not find a definitve statement against cigar smoking. I did find an article from a few years back that commented it gave you stained teeth and bad breath, but I can hardly see how these are DF'ing offenses. This would rule coffee for sure and a whole host of foods that do this also.
Does anyone have the CD-ROM installed and are able to dig up some info? Any elders here deal with this on any JC's?