Do I understand you correctly that Floris had swipe typing? Cause I tried the OpenBoard fork that has it, and it was horrible. It technically worked, sometimes, but most often was even slower than hitting individual letters. Usually I have to correct maybe 1 word out of 20 or so with GBoard, and even then what I want is one of the suggestions 95% of the time. with the OpenBoard fork, 3 out of 5 words were wrong and the correct one was suggested like 2 out of 5 times.
If its swipe is usable, I might give Floris a go...
edit: ah, English only. Not gonna work for me. I also prefer to have multiple languages active and being able to swipe in any/all of them. guess I'm stuck with GBoard...