Vivien, thanks for the explanation, as I have never heard of these. I have never tried acrylics, thus I know very little about them. Attempting to conquer watercolor is a lifetime endeavor (for me), and I have a fair amount of supplies. It is admirable that you are skilled in many mediums.
Anne, thanks for the great explanation and visuals. I don't make a color charts (yours looks great), as there is so much variation in mixing colors by percentage of each. When I made them for watercolors in the past, I didn't refer to them anyway. We have the same set of 12. Really the very large sets are not necessary to get a range, even though the manufactures keep coming up with bigger sets. Apparently most of the public has FSS - "Full Set Syndrome"! I use a sharpener in "moderation" when I want a sharp point, as I am a slow painter and do not go through a lot of supplies. I got the pencil set on sale for about $1.50 USD per pencil, so I think trying to preserve every bit of core would be just another thing about which to pressure myself. I have the same palette, recommended on YT. Got that on sale for about $7 USD. Any unused pigment can be left and reactivated.