Double Channeling Unique idea

It would be cool to have a Unique Weapon or Armor that has a Skill Gem that can slot another (Channeling) Skill gem that also channels whenever you channel another skill.

I would really like if I can channel Snipe simultaneously channeling Bonestorm. Or with like the new Martial Artist Ascendancy also channeling a Flameblast to have extra AOE explosion after the channel to keep u safe.

Really brings life and possibly alternative utility or defensive additions to the usually stale and very risky channel playstyles.