Just thought I'll share my personal findings with you all. So I typically just leave it in Sport and manual.
I couldn't help but notice that, if you want the car to switch to EV mode (given you're going the suitable speed and not pursuing the throttle down too much), in gear 6 to be easiest.
So for example, I'll keep it in Sport when driving around etc. Just to have that responsiveness at my disposal whenever, but once in traffic, stick it into gear 6 and let it switch to EV. I find this useful as moving off in gear 6 feels even easier to maintain EV only to drive around as it technically takes even longer than the normal drive gear to move off then.
I noticed this works best for me anyway, as I spent a lot of time monitoring eco/normal modes and just found that to be way to hard to be able to sustain the pedal input with my foot to maintain EV mode and got tired of switching modes all the time whilst driving.