I think the 6.5CM is intriguing for slightly different reasons than the fad logic promoting it. It's more effective and efficient than a 243, recoils similar, can be had in good starter rifles, and shelf ammo doesn't REQUIRE me to roll my own for volume shooting. Since that's the case, it's a cool round to start a new shooter on, that can take them from initial marksmanship, through hunting, through long range training, AND be enjoyable to shoot. Maybe the 6CM will get into that same niche, over the 243, but I still think the 6.5 pills lend it to being a better all-around cartridge, where the 6CM might be better for everything if hunting versatility isn't an overriding priority. It's nice to have options for new/young/small shooters....or anyone tired of recoil involved with wanting to shoot all day. Sure....tacticool LR fads aside.
