I'd guess the raised tailcap is to minimize the odds of accidentally activating the light, and also so the light can be stood on the tail if wanted. The light looks very well thought out to me, the main point being it's a single intensity light so the user is not fumbling with light intensity or strobing at the start of a self defense situation when the user probably needs an instant-on light with zero fumbling. I like the looks of that light a lot. I think Sig scored a bullseye with it.
That first thing is a myth. When not testing out lights for my YouTube channel, you'll find one of two lights in my left-side pants pocket. Acebeam Defender P16 Limited Edition model, or the Nitecore MH12S (current version). Both with protruding forward-clickie tailcap switches. Especially the Nitecore. And, those two are just the latest models. Vast majority of the lights I've EDCed over the last 20+ years have foward-clickie switches that stand proud of the tailcap. Accidental activation in those 20+ years of clip-carrying in a pocket = Zero.
But yeah, this light is not for a self-defense encounter. Strictly an EDC light. Any sort of mundane lighting chore where you can take your sweet time pulling the light from your pocket. As opposed to being out late at night, you see something out the corner of your eye, you legitimately think it's a probable threat. Your heart starts beating, blood pumping faster, you get an adrenaline dump! You reach for your flashlight to absolutely determine if it's a threat, while putting your hand on your concealed carry pistol without drawing it.... And you realize your fine motor skills are gone, along with having
literally nothing to grab onto in order to use your gross motor skills to pull the light out of your pocket.
As a strictly EDC light, it's perfectly fine. Bit weird that a company like SIG wouldn't make an actual tactical light. But okay. Perfectly fine for EDC purposes. If it was marketed strictly as a tactical light, the design would be an absolute joke. And, far from a funny one.