Sharing my experience after 3 days with a fully coated Apple Watch from Mobile Outfitters and my advise is - Coat the front and sides, ceramic back is optional but do not coat the heart rate sensor.

- All was fine on the first day right after I coated it, but after awhile it felt uncomfortable, the watch stuck to my skin and it was tugging at my bulu lol Thought it was too tight so I loosened it but it was worse wearing it loose, it was rough and it rubbed my wrist with friction and caused irritation. Thought I wasn't wearing it right so just shrugged it off took it off and ended the day.

- Second day wore it to the gym and after a few reps, my goodness it felt so sticky and hot on the wrist. Super rough and grimy. Started pulling at my wrist bulu badly. The irritation was horrible as well. Got pissed and ripped off the film on the heart rate sensor, cleaned it a bit and put it back on. And my goodness it was like I just put on a different watch.

- Third day - after a whole day and I felt like I could leave the watch on my wrist forever.

Probably will have stock by then.
As I ordered online and item has began to ship out. Estimated delivery date is 5-Nov as stated

Thanks!!!!