I’ve got one (mullet), and don’t really have anything bad to say about it. They are a fantastic bike. The reach is a little short (455 on a large) and I worried about that before I bought it but I think it probably suits the heavier front end.
I got mine when it first came out, and haven’t had a single issue about 1,500 miles later. Mostly it’s used in the woods for winch and plummet style rides, but I’ve had 50 miles out of it doing Borrowdale Bash and Back of Skiddaw, in mostly Eco and some Trail and the battery died a mile from the end of the ride. Battery two years later appears to be full health still, no play in the motor.
I’ve replacing it with a Levo SL, I think, which I bought last month. When I ride the Levo with a mate who also has a Decoy I’m working like a dog in Trail to keep up with him. There’s a big difference in power between a lighter tune ebike and something like the Decoy, and overall I’m not sure which I prefer.
You can definitely just plough through stuff on the Decoy but it’s actually very poppy and playful once you get used to it.