The Good: Stiffer and stronger than a J bend spoke. Easier to lace a straight pull wheel.
The Bad: Nothing particularly bad.
This is a review for just the spokes. I use G-Sport Taper-Hex Nipples with these spokes.
The straight pull design is noticeably stiffer and stronger than your normal J bend spokes. It also makes your wheels much easier to lace. I've had no issues with these spokes so far.
Other than that, there is not much more that can be said. I'm definitely a fan of the straight pull spoke design.