Never even considered it but I like to live on the edge and don't use a "trainer tire" either. I am however having a trainer specific water bottle produce to my exacting specifications. It'll retail for only $19.95 for a limited introductory period. Additional 2% off to BF forum members.

Don't risk you outdoor bottles during indoor rides, TrainerBottle will keep you hydrated during you most grueling indoor rides.

Available at fine cycling stores soon.