If you are training SPECIFICALLY to get as good as possible in standard tournament play, stick with your Etha. If you need to shoot less paint for financial reasons, that's a self control issue. You should not have to limit yourself in a physical way. If you still find it to be a problem, put a gravity fed loader. You want to retain the same setup profile. Switching to pump will NOT NECESSARILY help your normal-gun play. You will develop a different style of play and it will actually be detrimental to developing a "normal gun" style.