I had tested it on hway KL-PG-KL all the way. It does it job but of course you cant fully rely on it. I had a few encounter where suddenly the car change lane in front then i had to apply brake myself as I didnt wait for the car to auto brake. Didnt want to risk. No chance to test the ACC during rain but tried the lane watch during heavy rain and dark. It works.

No chance to try the LSF yet in town. Ppl might think u r weird as the distance between cars is quite a distance.
I had experience in a BMW before with similar thingy and it also has its flaw especially night time.

Honda Sensing is not autonomous driving , although it does assist in terms of adaptive cruise control . lane assist and few others

Okay the problem is Malaysian roads , now the whole adaptive cruise control is great but the problem is it keeps a very far distance (you know malaysians like to keep as close as possible) and plus there are motorbikes. I was told that the Honda sensing software was tuned for Malaysian roads but again , take it with a pinch of salt

It's more of nice-to-have functionality that trains you to be better drive. Try cutting lane without signaling , the system would just beep !
No official support in Malaysia but you can download the apk and install it yourself.