I've owned a JTV-69 and a Standard and I like the Standard better. And yes, you can use the guitar modeling to get a humbucker sound; the magnetic pickups aren't involved in the modeling.
If you really think you want the Shuriken, wait. It's almost always better to wait, save your money, and get the one you really want, instead of getting what might be good enough, because it's available now. I know it can be tough, especially when the GAS is calling. But every musician has probably made this mistake (including me) of not waiting for the right one. It's always worth it, long-term, to wait.