In reply to ElBarto:
I've tried both, and as aboves have said, the fit is quite different. The Houdini is boxier, shorter arms, narrower shoulders. The Squamish is trimmer athletic fit, longer arms, a more matte finish so less slick than the Houdini. Good hood, fits over helmet. I'd agree the Houdini seems a little more showerproof than the Squamish, but I've never worn them in actual rain. Blowing mist and drizzle the Squamish does surprisingly well.
The Alpine Houdini is even more slick to touch, feels more waterproof, less breathable and fits slightly bigger/different than the regular Houdini. It's not unlike a 1970s raincoat.