I have one (built up myself from 2nd hand bits though)
it gets locked all day at the station – so to make it evan less nickable i have
removed the head badge (easy to stick it back on in the future)
wrapped an old inner tube round the down tube where the "roadrat"sticker is – this is under the varnish so you can't remove it.
this, combined with a lack of bling bits and a decent lock means that so far it has avoided attention from thieves
stick with v-brakes rather than discs – I have had a disc brake stolen from a previous commuter whilst it was locked at the station