Pocket Solutions sent us their metal cover for the Toshiba e310 and we loved it! I expect the same quality with their latest edition that works for the Palm Tungsten T.
The design looks pretty nice and should hang on better and prevent loss moreso than the plastic cover that comes with the TT. For more info on construction see Astros Fan’s review here. To pre-oder the TT model hit their site here. Units are shipping in 4-6 weeks.