The L boards work to keep everyone safe so if possible you shouldn't drive without them due to the increased risk associated with that.
For example when I see someone with an L board, I know to give them extra space and do my level best not to do anything to spook them, as well as to generally be more courteous to them as they are not familiar with driving a vehicle. Even pedestrians will notice and know to be more careful around your vehicle etc. Without an L board you lose those benefits, making things more dangerous for you and the other users of the road.
Also: This topic (learner permit regulations and stipulations) has extensively been discussed on this forum and there are lots of threads with a lot of great info, so do a quick search on the site...
I've got nothing to add in terms of fuel for discussion.
But ironically, did you know that the first Porsche was infact, an electric car? Made in 1898, by Ferdinand Porsche himself, named the Porsche P1. It used a 3hp electric motor, had a range of 79km and a top speed of 35kmh