Lego as a Sketching Medium

In any art project there's a need to sketch down Ideas, in a project like this where I want to explain, explore and create complex machinery and explore engineering elements I’ll need to do a lot of sketches. The problem with this is I’m not really any good at sketching with traditional mediums like pencil or pen, or at least I’m not good enough to create sketches at the kind of quality I want. I will do some drawings later in the project, partly because I have to in order to show I’m not a one trick pony and partly because I do need to face my anguish. Instead of traditional mediums for the majority of my sketches and designs I plan to use Lego either real or through a digital Lego modelling software I’ve been using for a while now. I was remember watching a programme on architecture and Lego was described as ‘A 3D sketching media’. Using the Software ‘LEGO Digital Designer’ a free download off the Lego website I can create an model I like with unlimited pieces and colours, this software means I’m not limited by the size of my own Lego collection. Now I can understand that some people won’t think using digital Lego building software is a valid art medium. However personally I would argue there are many people who use Photoshop as an art medium, surely there is little difference between the two pieces of software.