I used it on a GSD 2 Demo while testing for world. It was in my list till the last day where I ditched it for OE and re worked points too add a interceptor squadron to my list. My usual go to was to use 3 squads of advanced and soontir to engage squads then have a GSD2 Demo double/triple tap into that fur ball and hand out hits where needed. I also had IG88 to hunt aces and take some RS hits to kill Jan/Dengar if needed while shooting with AA from GSD2 Demo.
Honestly a GSD2 Demo with the right tricks and set up can really bring the pain to squads and surprise ppl how effective it is. just need to build around it and have a plan. Very versatile.