I have to agree with everything the others said about power and economy.

I run mechanical on my daily drivers and electric on my "toys". They tend to sit up longer than I would like and it's nice to be able to prime the carb before trying to start the engine.

The only other advantage of an electric is if the mechanical is in a hard location to get to(like some streetrods). The frame mounted electrics can be mounted where they are easier to replace.

Mike