I will buy SC62 only if it has memory of last used mode like Olight S20 I have.
I also have SC600/SC600W/SC52, but I don't like to press and hold to access Zebralight's M2 mode that I constantly and frequently use for indoor lighting, especially for the very stiff switch of SC600/SC600W/SC52.
Then you won't be getting an SC62. Zebralights have a very elegant and useful interface, but that interface doesn't have mode memory except within each mode group.
FYI, Zebralights' have 2 different ways to reach medium mode: One option is you can press and hold from off. The light will turn on in low, and then move to medium after a second or so. However, there is a faster shortcut: double-click from off to immediately get to the medium mode group (and within each group there is mode memory). The one disadvantage with this method is the light will briefly flash to max before going down to medium.
If you want a light with an interface like an Olight S20, you're better off just sticking with your S20, even though the SC62 will have probably twice the output without the puke green tint.
I don't have an S20, but I do have an S10. I much prefer my SC52's interface to the S10. But I could see how with a few improvements the S10's interface could be almost as good (with the S10 they should remove mode memory from moonlight mode, and they should change double-click mode to max power rather than strobe).