I've got two 4 string Precision basses at the moment, and I've just bought an Ibanez Soundgear 5 string to mess around on. I'm a bit concerned that the difference in string spacing (the Precisions are 20mm and the Ibanez is 16.5mm) is going to mess me up. And also the extra string. I want to play both ideally, just swap back and forth between whichever one I feel like - does anyone have any experience as to whether this will cause me problems or have a negative effect on my playing? Do any of you ever swap between basses that are so different?