I am having my TomTom VIO now for 1 year and 10 months and noticed that I had not yet blogged about my experience with it. So here you go.

The TomTom VIO is not a typical navigation system: the navigation software is running on your smartphone which is connected to the VIO via Bluetooth. The only thing the VIO is doing is showing the map and directions on its screen, provide some rudiment user interface possibilities, and it hosts a GPS to assist your smartphone in the navigation work (especially when the smartphone is securely stored in a location shielded from GPS signals). It is targeted for scooters, so in the box you will find a mount which is enabling you to have your VIO on your mirror.
Assembling the VIO mount to the mirror is simple. And then mounting the VIO onto the mount is even simpler: put the VIO to the mount, turn it 90 degrees clockwise or counterclockwise and your done. The mounting is rigid enough, so I had so far no separation of both during a drive.

Most interaction with the system is taking place via your smartphone. Roughly every 4-6 months a map update becomes available, and maps are stored on you smartphone … so when connected to WiFi you simply let it download the new map, so also extremely simple.
Voice directions are available when you have your smartphone paired to a Bluetooth set in your helmet. I did noticed that when you have a lot of Bluetooth connections on your smartphone, then the Bluetooth connections sometimes disconnects. I had that on my iPhone 6S being paired simultaneously to TomTom VIO, Apple Watch, and Schuberth helmet. With my iPhone 8 I did not notice this issue so far so it might also be an issue with the 6S (underpowered?).
In use the TomTom VIO is useful for navigating from A to B. There is no option to load a route, except when using via-points. On a full charge it is possible to use it for approximately 4 hours. Charging it takes some time, so when you would be able to charge a little during a break then do in order to extend your usage time. The mount is rigid, so I have not experienced any separations of unit from its mount. The screen is good readable in sunlight, and the software does its work well.
Is the VIO worth the investment? In my view YES when you need a very simple navigation system taking you from A to B without a huge investment. You need to have 2 devices cooperate to get the job done: smartphone + paired TomTom VIO. So having the ability to charge your smartphone during operation is an advantage, and on my Vespa there is a USB port available in the glove compartment.
I am not using the VIO extensively, but that is not due to its functionality but rather my using pattern of my Vespa versus my BMW touring machine. The VIO has some power drain when it is lying around and that is the only disadvantage I see: when not having used the VIO for a month or so, then it has lost some battery power reducing the navigation time you then have. Recharging it before use solves this, but some trips are not planned so this is a little disadvantage I see.
And, you can order the VIO to match your taste by swappable rubber housing … see picture below.
