Yeah, iirc, Luke was the muscle in their racketeering operation. Obviously he shouldn't fight like Danny, but he should know how to throw a punch.
Re: gadgets, nothing too flashy that would take away from him being a tank. Probably a chain he can use as a weapon, a communication system he can use to talk to DW or some mission controller, a re-breather, zip ties, and bulletproof cars that still happen to break. I imagine he has enough cash to have a private helicopter pilot to drop him off in different parts of the city, since traffic is so bad. I could see the company helicopter being used to record his fights like the news did in an old Superboy issue.
He probably hires private pilots to drop him off in locations abroad--great excuse to use Wyatt Wingfoot again. Of course, these would all be property or expenses of his LLC, so if he were on a personal vendetta that wasn't strictly legal, he wouldn't use any of this stuff, just his fists and a black or yellow t-shirt.