Since I only use one language, I found the use of the globe key handy to easily get to the Enpass keyboard and then back to the Google keyboard. I do understand that it is probably not meant for this purpose, but nevertheless it's now a bit harder. I do like the non-auto fill technique you use on your keyboard.
One possible suggestion to possibly make the keyboard switching easier. For example, Keypass2Android has a non-root configuration option to auto switch back to the previously used keyboard after you press the "Go" key. Maybe something along those lines would be a better option as the globe key may be used to switch languages.