Its probably not worth trying to switch to Dvorak unless you're willing to put up with it long enough get decently fast. I use the standard Windows keyboard shortcuts (ctrl-c, ctrl-v, etc.) heavily. Dvorak moves these keys to the right side of the keyboard, which is extremely inconvenient for people like me.

Is the Dvorak keyboard really better?

Dvorak found that it took an average of only 52 hours of training for those typists' speeds on the Dvorak keyboard to reach their average speeds on the qwerty keyboard. By the end of the study their Dvorak speeds were 74 percent faster than their qwerty speeds, and their accuracies had increased by 68 percent.

Should I type with Dvorak?

People who prefer the Dvorak keyboard argue that it's more efficient, can increase typing speed, and even offers better ergonomics. Colemak is more similar to the QWERTY layout, so it's easier to switch to from a standard QWERTY keyboard.