Lockout modes are used by some manufacturers on their lights to prevent accidental activation in transit, primarily for safety reasons. During transport, if a power button is too easy to press, it can be easily turned on, for example if it's just tossed into a gym bag with other gear and thrown around a bit. This means that light will turn on and start generating heat while having nowhere for the heat to go, which will run the battery down, but could also be potentially dangerous situation...

For most "typical" or traditional bike lights, they use off-the-shelf optics that are often for a single high-power LED, which means all of the lumens are heavily concentrated in one spot, which can be enough to melt certain fabrics or in some cases even start fires. FIRES ARE BAD.

So why don't we have a lockout mode? For 3 primary reasons:

  1. Our unique optic design - since we design all our optics in-house for maximum beam control, the side benefit is we are using more LEDs at lower power through each one, spreading out the photons, so that even if turned on full blast there is not enough concentration in one spot to cause damage. We tested this early on in several different ways, one of which being 25 Evos in a cardboard box in a plastic tray covered in black tissue paper, all turned on max and taped up. No melting, no fires, just gets warm. So worst case scenario if you do manage to accidentally turn on a light in a bag, no damage should come from it.
  2. Our unique button design - we shaped the button such that it protrudes from the surface of the top shell so that it's easy to locate with thick gloves on in winter without looking, but we also made the outer rim of the button solid internally, so that if you take your light and press it up against a wall, it can't actually actuate the switch, because it's designed for your finger to depress only in the center. While not guaranteed to prevent accidental activation, it's way, way harder to do in practice, without making intentional activation difficult. 
  3. Confusion Reduction - the number one customer question for most brands goes something like this: "I charged my light fully and it won't turn on, is it broken?" Most users forget there is a lockout mode to begin with, which can be a major bummer if you show up to a trailhead ready to ride only to have your light flash red at you and not turn on, making you think it's failed. We want to avoid one more tedious feature so that you can have the smoothest user experience possible, while keeping the product as simple as possible. Without point 1 and 2 above, we wouldn't be able to do that.

We know this isn't the ultimate answer for everyone, some people really prefer to have a lockout mode regardless of all this, and that's a totally acceptable desire, but wanted to at least explain why we made the design choices we did.