A: Yes, cigars in glass tubos will respond to the conditions in the box and remain fresh just as they would in cellos. However, there are many cigar smokers who either remove the cigars from the tubes entirely or leave them in with only the caps removed. The latter is a good option if you find that your tubos seem a little dry, as it will permit moist air to flow into the tube.
Remember, the main reason for the tubes, other than keeping the cigars fresh, is for protection, and they’re mighty handy when you want to take a cigar with you and don’t want to bring a travel humidor or a baggie. I tend to remove almost all my cigars from their cellos and tubes, but that’s me.
The best thing to do is test. Take one cigar out of its tube, and after about a month, compare it to one that has remained in a tube, and see if there’s any difference in the suppleness of the cigars and the flavor.