Unfortunately, we do not have any personal user experience with this product, but I would be happy to forward your question to the community; perhaps a community member can help you with it.
Cleaning agent is okay and can be reordered. Rimless glass: No experience, it is surely in the manual. I would be extremely surprised if this case were not programmed. Sure, mirrors too, why not? I am very satisfied with the device.
The W3 OMNI offers several improvements over the W2 Pro OMNI, particularly through automatic mop washing and optimized spray technology. However, there is no guarantee that streaks or wipe marks will no longer be visible against the light. Although the W3 performs significantly better in practical tests, fine marks cannot be completely avoided depending on the dirt and incidence of light. The original cleaning agent is still relatively expensive, and unfortunately, there are currently no cheaper alternatives approved by the manufacturer.
Yes, the Ecovacs WINBOT W3 OMNI can generally be used on inclined glass surfaces such as pergola roofs or glass canopies. The key requirement is that the glass surface is sufficiently smooth, continuous, and within the operating specifications of the robot.
The weight is not a problem. The fact that everything works with a rechargeable battery is a great advantage. I can only recommend the window cleaning robot.
The mechanism only has limited power. Especially if the cable is twisted and therefore loops by itself, the cable should be "untangled", then it usually works again. If nothing happens even when the cable is straight, the mechanism is probably broken.
The Ecovacs W3 Omni is suitable for double-glazed windows, even if the gap between the panes is only 3 mm.
The robot recognises such a gap between two panes as an edge, slows down and cleans only up to the gap. You can then manually reposition the robot and clean the second pane. It is not necessary for the panes themselves to be 3 mm thick; the manufacturer does not specify the minimum pane thickness as a restriction for double-glazed windows. The robot is suitable for almost all types of windows with a minimum size of 30 x 40 cm.