Disclaimer;
@Laurent - I've come to appreciate that you have a knack (or gift) for putting the nuances of a pickup into words like no one else! I wish I shared that ability.
I bought the Olinto for a mid 60s P, which, that bass (by it's own nature) seems to have an ever-so- slightly pronounced mid voice.
I originally had an SPD-1 in that bass - which worked well, especially in a live setting.
I then tried the custom shop '62, thinking the mid-scoop might fit better, but it over-compensated for the mids.
As soon as I tried the Antiquity II, I knew it was the right fit (for me.)
But I had been researching the Olinto, and when I inquired with someone that had one, and he offered it to me. Knowing they're not easy to come by, I didn't want to pass it up, and used it for quite a while in that bass.
Out of those other pickups, the Olinto was most in the ballpark of the SPD-1, a good vintage "reference" pickup itself, - but the Olinto is more complex in the mids and overall character. Not as much "air" on top as the Ant II.
A very good match - if not the best - for that bass, but I just missed the Antiquity II for what I wanted, especially with my string choice for that bass, flats - but more towards old school (currently TIs) vs. Cobalt flats that I usually gravitate towards. (I constantly see comparisons of those strings, but I find them nothing alike)
so I ended up putting the Olinto in another bass - a Squier - the cic Fiesta Red, which has been the more "finicky" Ps to find a pickup for. I just swapped it out of that bass - briefly with a SPD-4 for a week, but wasn't happy with the string choice (9250s), and decided to try La'Bellas, and suddenly remembered I had that '74 pickup sitting unused.... That '74 PU with La'bella DTFs is the best fit yet for that bass.
So the Olinto is currently on my workbench, waiting for me to get some free time to decide my next move...
fewer options now that I'm content after "rolling" P pickups the past 3 -4 years and have found the right fit for most.