Yeah it might be more worth your money to set a host up to monitor the traffic and check two things. The protocol counts and where they are going. Also if your in control of the network check for any FTP servers as your users might have those which s...
Doable yes.. practical.. depends on your needs. Is paying for two T1's practical for your operation? Could you use a more affordable lesser solution as a failover or are you really needing this much bandwidth from two points?