At about 14, a coach talked my son into switching from a 2 hand to 1 hand...they were convinced that it would be his new weapon. After he switched, he lost consistently for 3 months, took him 6 months to feel any confidence and about a year to really develop it as a weapon. It was not a great time for him to be switching, going from 14's-16's so it even wasmore of learning curve than it should have been. Was he happy he did it, maybe, did it improve his game significantly, not really but what was done...was done.
The moral of the story...think about it very carefully and remember the learning curve!!