Not talking about warpage. What i'm saying is that if you had a good shaft and you played in reallllllly humid conditions its not going to play different. Warpage is damage that takes a long time to happen. The way a shaft hits/plays isn't going to change in humid conditions. Surface might get sticky but how it performs won't change.
In the video, Pia said that humid conditions "changes the shaft jump sometimes" (1:05)
I have no idea what "shaft jump" means, maybe just bad English on her behalf...
For years I've been playing with Predator 314 shafts, so I can't really say anything about old-school solid maple shafts. I don't remember feeling a difference in playability in different humidity; maybe it's there, maybe it's the table, I don't know. All I do know is that wood might warp in humid conditions and moving between conditions – not all of them, not all the time, but it could happen; it happened to me.
I had a Dominiak spliced shaft that warped, I had an OB spliced shaft that warped, and I have a few solid maple shafts that warped. Granted, I have more shafts that haven't warped than shafts that have.
Warping is a good enough reason for a travelling player to move to CF, as it won't happen; you won't have to go looking to buy a new shaft just before a tournament that you are not used to, and you don't need to travel with 4 extra shafts... which will not feel the same, as no two pieces of wood are the same and a used one will feel different than a new one. The only reason to have an extra shaft will be in case of a tip flying off, and two CF shafts from the same brand will play and feel the same.
So we have consistency, not just with the same shaft in all conditions but between numerous shafts if you need to switch.
We have durability; it won't warp or ding, etc.
These give a player a clear mind regarding the equipment while playing and touring, something that some of the folks here can't seem to understand.
For the amateur player who usually only plays locally, going to CF is a good idea, as the above reasons will just make the shaft last longer, so the high price now will actually be cheaper in the long run. I don't think that a player that already has a cue should run and get a CF shaft. I'm saying that if you are in the market for a new cue or shaft (for whatever reason), you might as well go with CF.
I didn't need to get a CF shaft; I have at least one Predator 314-2 shaft for any joint type I have in my small collection, even 2 shafts for some...
I was just curious about it, and I do think that they are great; they are the future.
