Gareth
Being an 'old guy' I've done all of the 'traditional architectural' stuff from walking the site and sketching in the field to drawing with set squares. The advantages of digital media are incredible, but the insights that come from seeing and experiencing our environment first-hand cannot be overestimated.
The old skills of forcing yourself to 'draw' on site actually makes you 'see' the environment in a different light. I worry about a whole generation of architects who only want to work in a digital environment and don't want to experience the smells, sounds, lights and activity of a real sight or building. In the end, their 'art' reflects that experience (or lack of it)
David