Given a fair number of reports of failures of the DPP's Motion Sensor Technology in USPSA, I am leery of Holosun's Shake Awake, and that's something that can only really be teased out over large sample sizes.
Sample sizes should already be available - they have applied this technology over several models for the last couple years now. I have yet to hear of a failure. Hopefully the design defaults to a constant on configuration if the Shake Awake circuitry fails.
Finally received my 509T, I was wondering if this day would ever come. First impressions are good, and I highly recommend the chpws plate for the Glock MOS system as the plate to 509 interface is perfect. Hopefully I’ll get some range time this weekend and see how it does.