You can get your lag from aimedshots, but most of the time a ranger is going for all out damage anyways. I think the hunter class has way more than enough maledictive options to really need Bearcharge, coupled with keeping call lightning, and their defensive capabilities, seems like it would be an even trade-off.

However, keeping bearcharge, the damage output should really be either much higher, or have some other type of lasting affect. I think this would mesh better with the skill set, and make practicing bearcharge even worth it. As it is, for damage, there are just too many "better" options to go with. All the same, the skill still doesn't fit with the Hunter build, imho.