That was some kind of Sagem with one key lock.

For me phone is tool to use, not something to cuddle. I didn't use any pouches or cases for any of my phones, for N800 I got only screen protector.
After ca. 1 year they have some scratches but nothing preventing from use or making it harder.
I really admire sturdiness of my N800. I dropped it numerous times from 1m and higher onto hard surfaces and it works great. If N900 is of lesser build quality that I have to treat it like infant (including childish interface)...

The only problem with N800 dropping was one time when after hard contact with floor in kitchen every element went in other direction: N800 itself, cover, battery and infamous cover magnet so I've had problems with mounting of internal card. Fortunately after few hours I found it.