No worries, brother! It just takes minor adjustment on the technique. It's definitely a different feeling than a thumb stud. And I will admit that I've never been able to "flick" open an Emerson. Even my Mini-Commander that's years old and broken in. I believe sticktodrum posted a youtube vid of new stuff KAI sent him to review and guess what? He flicked the ZT Emerson's blade out with no effort! I think it's the design itself. ZT does a fantastic job with their manufacturing, and it's widely accepted that Emerson's start with gritty action but smooth out over time.
Speaking of your Zing, I've never owned one before but it's my understanding that the ramped thumb studs are a little smaller than the ones on the Blur. Any truth to this rumor??
Good point, man. The cool thing about that is you never feel bad about putting them through hell