I have a 3L(S) that I picked up with Steam, and because of that I never bought the Raven mechpack. As someone who does not have a Huginn I found this spec to be a fantastic alternative. It's been a blast to roll with during the Mechtoberfest event!
I have a hard time with anything but the sniper build in this chassis, but I'd try this. Looks like it would be good at taking out pesky back armour.