I have both types (my VN has the plug in) but for winter storage of my other bikes, I take the battery out of the frame so It doesn't matter much what type in use.There is a better hookup for bikes. Instead of a big set of alligator clips you can have a dedicated male/female plug that stays on the bike. Much handier, espcially for float, or maintenence charging.
No. The one I am talking about leaves just a female plug on a short wire connected to the battery in the same way as the one you show, but the charger stays home. The plug protrudes from under the seat in a discreet manner, to be used when you want to chage it. It enables you to charge without removing the seat. It is not large enough diameter for a jump start(I think), but it is good for a trickle or a float charge.
Thank you. I just took pics of the pigtail as it hangs from the side of my Nighthawk. Here is the link.Here's an example of the charger with pigtails...