My own experience of the Uniqlo cheap-one was entirely the opposite - as someone who runs hot it feels like it regulates temperature far better than other jackets and is actually far less sweat inducing than other similar warm jackets.
I agree, I’ve got a lightweight Uniqlo I wear on dry chilly winter rides and cold commutes, find it much better than a soft shell, hardshell or anything else in terms of regulating temperature. Breezy but warm.
My own experience of the Uniqlo cheap-one was entirely the opposite - as someone who runs hot it feels like it regulates temperature far better than other jackets and is actually far less sweat inducing than other similar warm jackets.
Obviously a backpack is a bad idea, but still