It may take a bit of mental effort and practice but it is easy enough to just take the load off the pedals whenever you change gears. Front derailler and you may be lucky enough to get away with it but the chance of a "Clean" change is not very good. But as I say- Practice just taking the load off the pedals when changing. Millions of us do with no problems and it is only for 1/2 turn of the crank at the most and you do not even notice any slow up in speed.