I just started to get into learning to play hockey, and being right handed, instinctively chose a right hand curve. It felt really natural and my shot was pretty strong.
The problem was that I began to notice whenever I would poke check, or reach for an errant puck, I would transfer to the right hand and slide to the knob. It was too strange to keep the stick on my left hand and reach with it.
So being fairly new, I figured the transition to left hand wouldn't be too much of a pain. Man, I'm so glad I switched over to dominant hand on top, shooting lefty. It took me about a week to be comfortable stick handling, and another week to get the same shooting form and power as a righty.
I know I'm a noob, but to other fellow noobs starting out, commit to dominant hand on top, I know I'm glad I did!