Glove makes sense but I just can't convince myself to try one. I always keep a damp towel handy and wipe down my cue and hands pretty regularly so humidity is not much of a problem. This also keeps my cues looking nice and new.
I've never had to use a glove yet, always keep my towel and my Seybert's leather burnisher handy, and my had stays dry and my shaft smooth. Maybe one day I'll have to use a glove, but I'm not seeing it anywhere in the near future.