"The Meaning is in the Message" -it shouldn't be impeded by the means.
It is very important for the credibility of an Architect to have overcome the intrinsic difficulty of expression through the medium, no matter what the medium is.
You draw with a pen/pencil and you move the tip of the pen you have, in a way that the resulting line(s) successfully carry your design message in such a way to the client, that seems not only appealing aesthetically, functionally and feasible to him, but directly linked to you, like your signature. You never become an observer while drawing, questioning your pen moves, pressure on the pen tip, you just transfer the pathos of your design on the paper or mylar maybe and from there, directly to the client's perception and imagination, resulting in similarly triggered enthusiasm or at least spontaneous acceptance of the project.
If not able to draw using a pencil, you utilize another media like a computer program or maybe something else presently unknown, to express your thought, then you have to be a master of that media, in such a way, to achieve results similar to the above described when using a pencil, or even better.
Exactly like the famous "The Meaning is in the Message", it shouldn't be impeded by the means.
Never forget that "God is in the Details"!