Anyone have or used one of these? Saw one yesterday for the first time. Thinking about getting my son one for Christmas to add to his collection since he has plenty of batteries, but not sure how well it would work. The drill, impact, bandsaw, grinder, sawsall and even the weed eater are awesome, but just not sure about a battery powered chainsaw. Also, the bar length seems short. We have a gas powered echo chainsaw, but have had issues since we bent the bar and had to replace it.