Hello, THANK YOU very much for this insightful critique! I was just posting about this light (and any other lessor priced alternative?); after reading/seeing many reviews, I thought that THIS WAS IT! The light I've been looking for since a - STORM 350 headlamp + Maglight LED thrower... ALL IN ONE, with superior quality?! ARGH... Thank you again for stopping me from succumbing towards a $90 mistake!
People should be praising you for this kind of exposure. I was literally thinking of making a (poor, in ignorance) financial/application decision on this one... 
That button issue IS a RED-FLAG: It's the PRIMARY function of the device. Defunct SWITCH = LESS access to device function! TIME is critical with being able to TURN ON and cycle device's intended function(s)! E.g. I could crash into a tree going 20mph down a forest trail = DOOM - if the switch does not work as I have practiced to activate it... Great job!
_Poor magnetic (aka, non-dual neodymium mags) connections?! Geesh, smh - WHO is designing these intuitive, yet flawed features? THEN someone in management signs off on it; DID they actually test this out in multi-usage environments (as advertised!) vs competition to confirm it is "more efficient in mechanical actuation/application, 'better' etc.?" Doubtful... that's telling from an engineering/design/management standpoint for an easily lost, $90 "flashlight!?"
Are there any other (cheaper) alternatives? I've just recently found out about the HM61R (really wanted the exotic "Amber" version, scroll down the page):
https://preview.tinyurl.com/y2tt94wv
Thanks.