Having a exp pedal on a floor product isn’t bad if the pedal is good . I don’t think that Roland got problems with the ones they put in gt6-8-10 etc . With one, you can have the volume by default and a wah if turned on, already a good + . personally I use a real wha and a real whammy with the fractal and other . It bored me to pay a good exp pedal that cost the price of the real effect .