Morning Peter, thank you for your post.
We have swiftkey whitelisted but unfortunately all app's including swiftkey are not displayed - therefore when our team selects add a PIN they are presented with the google voice to type screen and a message saying this input method cannot be used!
We have had to factory reset almost all handsets and adjust our profiles.
This issue needs to be picked up by Meraki, as I see it, if you use whitelisted apps and your profile ensures the phone is protected with a PIN we are continually going to have problems.
Not sure if anyone else has found a solution?