Being into too many niches can make you come off as fake and try-hard.
What I mean is more that you appeal to women in different niches for different aspects of your authentic self. If you are a multifaceted person, you will have different traits/qualities that appeal to different women.
I don't think it matters what equipment you use but more whether or not you can back it up with knowledge of the niche and practical skills.
If we stick to my example, it does matter what equipment you use. Bikers ride different motorcycles than Racers. Riding a motorcycle is part of the culture. You can dress in your dirtiest Jack Daniels T-shirt with a denim vest and a bandana and prance around in your engineer boots, but if you give her a ride on your Peugeot moped, she probably won't believe that your Harley is in the garage.
The question is: is it the niche the girl is attracted to or the guy?
Women who are interested in bikers hang around in biker bars, become Sign girls in competitions, pose with motorcycles. If you are an authentic motorcycle rider, you are more attractive to these women than a suit in a Mercedes.
Women who are into creative spirits hang around in artist communities, visit gallery openings, art markets. If you are an artist, you are more attractive to these women than a suit in a Mercedes.
Women who are into athletes hang around in gyms and sports arenas and competitions. If you are in fit shape, you are more attractive to these women than the average dadbod guy.
If you're fit, creative and ride around on a motorcycle, you will be considered attractive in these three niches, as well as with women who are looking for this combination.