(Sanders, 2018) did a review of the next version of Sailfish, version 3, which was announced a Mobile World Congress and has an interpreter using Alien Dalvik, which allows it to run Android apps. To me, this would actually be a weak security point, there has been many example of where an interpreter has failed and (Tung, 2018) identified five vulnerabilities in software interpreters.

In general, would anyone consider using an O/S like Sailfish?

Sanders, J. (2018) Jolla unveils Sailfish 3 mobile OS, with ports for Sony Xperia phone and Gemini PDA Available at: https://www.techrepublic.com/article/jolla-unveils-sailfish-3-mobile-os-with-ports-for-sony-xperia-phone-and-gemini-pda/