Originally Posted by pardonmyn00b
Fact, you can reverse your throttle on the transmitter.
This is fine with the typical crawler setup: FWD/Drag brake/REV to change it to REV/Drag brake/FWD as the ESC won't care. But if you use any other setup such as a bashing FWD/neutral/brake to reverse then pulling on the trigger will give you brakes and when moving forward fast you won't have any brakes.
Another thing to consider is whether the ESC has the a sufficient current rating in reverse which will now be your forward.
The best thing is to do it at the ESC, either through programming or switching wires.