There might be corner cases, but making the case out of the cornercase is a distortion. I'm a Maemo heavy user testing and using regularly plenty of apps. The N900 stylus stays in it's place basically always since I'm using fingers all the time. I believe this will be true for most Maemo 5 users.
They're maemo and MeeGo... "Meamo!" sounds like what Zorro would say to catherine zeta jones... after she slaps him for looking at her dirtily...