Think of it this way: Would Amazon move its main site to, say, .shop? Is it really big deal that few people mistyped your email? Are you really losing deals? I never had issue with it, as normally people already have the spelling of my name in front of them and all I am telling them is my first name at my first name .com and then in few minutes I have email either in inbox or spam folder. Focus on dustie.com, don't create confusion. Google owns bunch of names and could buy almost any name, but they often choose subdomains or folders of google.com like /drive etc. Just think why they do it. You own your brand in .com without any long tail, that is all you need. Focus on creating content and upping the authority of your site and then enjoy the results.