I looked at them but have never had good luck with anything that is cheaply made and messed produced that involves rechargeable batteries. If DeWalt made one I'd be more interested .
That being said, I have never actually used one so take my post with a grain of salt. I think a good quality pole saw is the smartest way to go or else a good quality gas powered pole saw. I have a Stihl gas saw and it is a MONSTER!! Hreat for summer trimming, not great for a stealth hang and hunt!