I've finished building the first of my tac squads. The Forge World kits make them look amazing but honestly they look more like plague marines than the GW finecast plague marines. I'm considering using them as plague marines in the future once I've bought and built some regular chaos marines. I might build my second tactical squad without the FW conversion kit.
The fat bellies on most of the torsos mean you can't fit the regular bolter hold arms on either so I've had to build a few holding bolters one-handed (which looks badass!) or build them holding bolt pistols with bolters attached at the hip.
I have now undercoated this squad and am hoping to get a test mini painted this week so watch this space!