Linux on Treo 650 gets real - Engadget

Engadget is reporting that somebody has GPE Linux running on a Treo 650! I recently played with the Treo 700 at the Verizon kiosk at Circuit City. It has awesome functionality from what I could tell. But I would love to be able to run a more dynamic OS on my Treo. I question the stability of Linux on the Treo, though the article implies no problems. I wonder if it would affect my phone service with Cingular or are those two different aspects of the device?