Qualcomm Gobi 2000 WWAN on RHEL5/CentOS-5

The backlight of my Thinkpad X200s stopped working reliably a few weeks ago and before using the warranty and shipping it back, I bought a Thinkpad X201 as a replacement. This system comes with a Qualcomm Gobi 2000 WWAN module (despite the box mentioning Ericsson F3507g) and while a driver exists, the device is something weird.