AW5 with eSIM for 2.5 years now.

Cellular was helpful in a few situations:
1. Didn't bring my phone and calls came in, not that they are important calls.
2. Out for exercise and someone reach out, not everyday out for a run/swim.
3. Out for exercise and needed data to download podcasts/music/audiobooks, which drains 10-20% of battery and and gets pretty warm. Concerning if you want to keep ur watch for long.

Use cases can't really justify the RM18/m from Maxis, it's a bit too much for me. Most probably gonna upgrade to GPS-only watch in the future.