For years my wife would use the hands and mouth method to get it over with as quickly as possible. But when she had her 'epiphany' and decided that sex is a good thing - not something to get over - but something to savor, the hands were gone. That's when she took pride in getting me off without her hands and then being able to deep throat.
She doesn't actually deep throat in the porn sense but takes me pretty deep and I'm very happy with her new enthusiasm.
My favorite now is when she combines a glass dildo in my ass as she goes down on me. The glass really makes me explode - so she has to be careful or the blast can make her gag. Her timing has gotten pretty good - so it's all good!