NBP tested this in 2014 and got 140 hours from a CR123A. That is where I got the numbers in my database. But he tested a clicky and maybe the rotaries have higher background drain.
Yes, I believe that it has been previously posted several times that the rotary has substantially higher overhead current.
In fact, I think it has also been noted that the modern "ACME" - era clickies even have higher overhead than the vintage "legacy" - era clickies ....