Seriously speaking though, I think it is not worth the price. First of all, its priced as much as a high-end mice like the Logitech MX Master or MX Anywhere 2, or the Razer Mamba, so I would expect the same level of ergonomics, scrolling feel, sensor, etc. from this mouse.
Unfortunately, from my (limited) experience, it doesn’t even match a regular Bluetooth mouse that’s priced 1/5 of the Arc. From ergonomic point of view, it is less comfortable than a regular mouse, the shape is nowhere like your palm, and there is nothing on the side to grip on. The sensor is located on the front-most of the mouse, which is counter-intuitive, and the scrolling doesn’t give you the ratchet friction feedback from a regular mouse (only a weak vibration). Unless space is really an issue, you can get other BT mouse that’s more comfortable to use and cheaper at the same time.
As an example for what a mouse in that price point should do, the MX Master or MX Anywhere 2 pretty much give you the opposite of that. The scroll wheel can be configured to either ratchet or free-spinning, or as a “SmartShift”. In case of the Master, it even has a dedicated horizontal scroll wheel. The Anywhere lets you tilt the scrollwheel. Its an upgrade to a regular mouse, not a downgrade like it is on the Arc Touch. They can also connect to 3 devices, the sensor is placed in the dead center of the mouse, and it is designed to fit in your hand, also an upgrade from a regular mouse, not a downgrade. That is, unless youre left handed.
Though this opinion piece comes from someone who owns two Logitech MX Masters, so I could be a bit biased here, but I think its that good to have one on my desktop, and another one in my bag for the laptop (soon it’s gonna be the V). Either way, Id recommend to go to the local store to try it before buying, cs shape of a mouse is extremely subjective. In case of the Arc Touch, make sure that you have tried the scrolling function.