45 degree? V-moda does it, but I would think a 77.5 degree would be best, or around 60 degree, enough to not get caught in the pants, and enough to give room between the jack and device.
Sorry i was referring to cable microphonics, as in hearing the cable rub against the shirt, I would imagine it would be a big no-no, but just confirming. And yes I completely agree with the type of music it should work with.
The tangle resistant kevlar armored cables are rounded on the A5i (compared to the new S4i which have flat cables) and that is a good thing because flat cables typically produce more cable noise than round cables.