The tech is the same with the KISS on the Persei and the Omicron, although the voltage can be different. Depending which battery you are using in the Persei. (3.7v or 7.4v) Heat is applied to the wire coil and there is some (not a lot) of absorption into the wick. Best to load only a BB (or a seed) sized amount applied directly to the coil. Then add more as that depletes. Usually there is still a rip or 2 left in the wick even after the load apparently has melted away. Avoid dry burning the wick. (Visible red glow= not good). 1-3 second button pulses do it for me. If you are using a 7.4v KISS, be very careful not to dry burn, and avoid long button pulses for long cart life.
The Nibbler xL is definitely a very good thing! If it is out of stock at W9, you can try @VaporWarehouse .
They are an authorized dealer and a pleasure to buy from.
WOAAAHHH when did the omicron mini become a thing? Fucking buying one of those i think