I'm using it with Rock hydro gel RM7 for 2 pcs... naked is the best way to go... the application is quite easy, looks horrible with lots of bubbles when you first apply it, but it will go away after 24 hours...

I'm not using any case but saw there are lots of promo going on for spigen 44mm for rm2X and rhinoshield rm5X recently... search their fb page for the promo info.

Or you can just use the watch naked and save the money for more bands!

Bought it from Shopee... local seller too

Yea worried of scratches so I had the hydro gel, replaced once already after 3 months of use due to a knock on a glass door that cannot be "cured". Normal scratches will just fade away after a day on the hydro gel's surface... u still get the smooth touch on this but may see some wrinkles under some reflections.

I'm quite gentle with my watch collections so I'm ok to use it naked... you should consider a case if u r not haha! My dad manage to scratched his apple watch badly in just a week time while waiting for his hydro gel to arrive... was surprised the scratch marks would disappear under the cover of the hydrogel as well... highly recommended!

Just to take note that some cases may not work with the hydrogel or any screen protector as they can be too tight...

Yes you can. AW 4 & 5 share the same dimension except internal hardware.