I can confirm that the Warp nanos (at least the single version) are rollable.

On the other hand they seem absurdly rare. I needed to roll both for two characters, so I had a character with clicksaver sitting at a mission terminal. After I got the first one he ran for a full day rolling missions in range of both nanos, and got nothing.

Also the QLs have not changed, the current combined warps were created from the old bottom-tier neutral warp nanos, which were always QL 87/97. They were also never offered in shops to my knowledge.