I run arch on a laptop with no problems at all. I specifically got a laptop with intel graphics and wireless so I have a great experience with any distro :) Arch required almost no setup when it came to graphics/sound/wireless. Just had to install xf86-video-intel and xf86-input-synaptics.
IMO its best to stay the hell away from switchable graphics period if you intend to use linux.
Speaking from experience, life is just too short to run arch on a laptop. Heck, I have a hp pavilion dv7 with switching graphics and even that was a pita to get stable on ubuntu.