I wound-up grabbing the .design version of my .com because I have a two-word company with Design as the second word. But, make no mistake, I will lose traffic to the *design.com address. Luckily, I started with the .com version and won't give it up, always using the .com, .net, .us and others to steer traffic to the website on the .design address.
Why .net for a brand design agency? Because we have a highly impactful internet presence and a large internet portfolio. Why the .org? Because we do charitable work we may want to one day highlight. Why the .us? Because our brand is international, and people of other countries use their own country code Top Level Domain (ccTLD) as the default address, so if they are looking for an expert in America, they may well look for a .us domain-based address.
Another reason to register more than just the .com (or any other TLD) is to avoid Domain Squatters, which could register your branded domain in another extension and then post material that is offensive to your customers, essentially ruining your reputation unless you buy the offending domain name in question from them. To fight that, we have multiple renditions of our brand as a .com and a .net.
If you have a brand that is easily misspelled, I would also register that domain. As an example, a large company that might register HisStore.whatever might also consider registering histore.whatever, because of the easy misspell, but anything where a brand might be miscommunicated (does it pass the phone test where you don't have to spell it out or explain it, it is easily understood verbally) and redirect that misspell to the right spelling.
However, it isn't a good idea to become a domain squatter, guys. It will ruin your online marketing reputation quickly as Google sees what you try to pull off and all your websites will get buried, and the sale of a domain name has to be less than the company hiring a half-witted lawyer that would easily destroy any Copyright or Trademark infringements. Those guys are just idiots.