A scott s40 is not something i'd worry about if you know how to lock and you're not locking up for hours in bad areas while being completely out of sight.

that said, why not get an SE draft if you're just looking for a cheap as hell bike... or a dawes ebaytrack bike from sprtymama(bikesdirect's wife) with the bmx cranks... or this: http://cgi.ebay.com/SUPER-SALE-Track...ht_3502wt_1143

a track-ish bike is great for fast city riding and you may find you ride it more than your roadie especially on quick rides to the store...