P v Z or T Strategy

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I am currently a high diamond player that doesn't play too much. However, I do follow and watch relatively a good amount of SC2. I have yet to see any pro (I don't know if anyone else has) to utilize a fast DT - Zealot - Sentry - Stalker push around the 6:30 - 7 min time mark. I have been experimenting with this build for a few days now, and I have a 90% win rate against Z and T with it. 

Has anyone seen a professional build that revolves around this idea? Also, I like to mention that it is by no means an all in. I usually expand off this push.