I have worn nothing but a pocket watch for about the last year (edit: that didn't come out quite right) :-) Mine comes with just a garment clip too which makes it easy to clip onto my pants just under my belt and it works fine for when I'm trousered.
I have a large number of vests because I love the way it looks. I made my own Double Albert from chain, some jewelry parts and a nice ruby red stone all gotten rather cheaply from the hobby store. It took almost no time to put together. One end of the Double Albert has my watch and the other end has an English 2 shilling piece that I brought back from a prior trip. The whole rig is help up by a t-bar through one of the vest buttons.
It looks great and it probably cost me no more than $10 to put it together.
(and I know I'm getting another watch for Christmas!!!)