Bitwig Preset FX Feed Fader
add your own FX to the layers (after the tool device) and then use "Feed 1-8" to fade between feeding the fx devices with audio signals. This should not cutoff the tails. https://polarity.productions
This is a companion discussion topic for the original entry at https://bitwiggers.com/presets/deaa12ac-09ff-4584-89c5-44efc655dba6/