I used 1.5 lr atties on ego and Ego T batteries for a month and they seemed to work fine. The biggest thing to realize is that they will drain the batteries pretty fast. Also, with those pvs I found that after an hour the hit was dropping something fierce and I had to switch out batteries after 2-3 hours to continue to get a good vape. The biggest issue I had was consistency, I found I was holding the button down longer to get a similar experience in relation to time. I have since moved to a 18650 battery mod and that has made all the difference. I now get hours of consistent vaping.
So you should be ok with LR atomizers on the Ego and Ego T batteries. Definitely try the Iken line of atomizers, they are amazing compared to the other atomizers I have tried(bauway, joye.... havnt tried cisco yet).