yes, idea itself is good, but in that article some strange actions proposed such as dragging selected text to the icon, tapping place to insert to (instead of cursor position). In our case just icon on toolbar which will switch between scroll/select modes is enough but unfortunately I can't change default browser UI.

soon will upload new version, with configurable settings, without libicu dependency and now only one package, no need to install custom versions of microb-eal, browser-eal and tablet-browser-daemon.