Kristian,
you should just get the Schoeps and be happy. I am seriously thinking along those lines. It allows you to have one mic that you can work with in every environment (recording AND live) and so you can become intimately familiar with how it will work with you and your instrument. Sometimes I go into a studio and they throw some fabulous vintage Ribbon on there and the bass sounds utterly baddass but in a way I am not totally familiar with but then I have to record and be at the top of my game while hearing it all through the lens on this different aural experience. With the Schoeps, you play the one mic all the time. At least friends of mine who own them do. Plus it fits nicely on the H clamp. I dont know why I am not interested in the chuck isreals mic but I would go for the Schoeps.