wireless hub motors

Anyone own or have any experience with the following motors:

The London fixed gear Zehus at
https://www.fixedgear.london/collections/zehus-1/products/london-fixed-gear-zehus-700c-wheel-plug-in-electric-universal-conversion-kit

or the BMSBattery All In One front hub at
https://bmsbattery.com/home/857-all-in-one-hub.html

If no wired brake sensor,then how do these know when to cut power?
Are they safe?Any other thoughts on these motors?

I haven't used either of them specifically, but the second one is only for front wheel, and the idea of the torque and the weight of the batteries and motor working suspension fork dropouts is a little scary, plus you have to have a smartphone on to run it.. So rainy weather might be an issue.

The first one is only set up for single speed which may or may not be what you like, but again, unless you really see yourself pulling the wheel off and on to go from pedal to electric a lot, the integrated wireless wheel thing seems problematic with the internal battery right where the motor and controller heat are, and counting on an app to run it. What if they pull a Photobucket and suddenly lock out your system unless you pony up more money, or just stop maintaining the app?

Both are PAS with integrated sensors. No throttle, no ebrake. Both require a bluetooth enabled smartphone.

The first is much better since it does sense the torque on the cog, it is lighter and likely rides better too, since it is on the rear. I believe this one should be a very intuitive and predictable assist, single gear. It is faster, likely more reliable, but expansive for the power it has.

The second is very cheap, yet has better torque and is available with better range. It also has features that are uncommon: it does sense movement and angle, and can be set for various responses to those. This means it does start after the sensor had detected the wheel spinning (setable), and stops when it does sense braking (or setable coasting desceleration). It also does sense slope angle and does increase the power to a setable proportion accordingly. The software and controller are an evolution of those that are used for monowheels, with 6 axis gyroscope sensor. It is less intuitive, but should be pretty quick to get used to. Being on the front might be a turn off to some, but letting you use any gears you want on the rear. The system is likely to be less durable than the London fixed gear. Yet again it is so cheap that replacing it, could be less troubles than claiming the guarantee for the expansive one.

That is only a quick overview, with possible errors of interpretations. I didn’t ride any of them.