I bought an Omnicron awhile ago and didn't really enjoy it. I got it to use on road trips and for work, but I honestly could not get high from the thing.
Filled my first cart up with Nitro OG wax and it definitely did not taste as good as dabbing it. Like it was said, it gives dense hits on a new cart, and diminishes slightly over time. This first cart went so fucking quick I probably didn't even get 100 hits out of it. I'm not sure what happened, my error or what, but it was disappointing.
Loaded mutiple carts, some last longer than others. Not 400 long though that's for sure. I did not count, nor do I really know what they consider a "dose." I would hit it for 5 seconds, depress the battery for a second, hit for another 5, etc. until I got a lungful.
Also had to reheat some carts to get the wax back down to the bottom of the cart.
It was not as satisfying as dabbing and for the amount of time it takes just to hit the thing trying to get a buzz not worth it to me.
Also quite amazing at how small the fucking intake hole is.