How much do you get paid to be out of practice? All experts practice their skills. Athletes train, musicians and actors rehearse. Investing in a little practice time always pays dividends. Of course you can have the intern do it… and I’ll outsource renders and final presentation materials as needed, but the thinking sketches, the ones where I’m working out the idea, those are important. Everyone’s workflow is different of course, I tend to think on the page.
Nothing wrong with developing techniques to improve your sketching… those take practice as well.
Frequency impoves efficacy.
I get paid to think not sketch – sketching one way or another, faster, slower, good, bad, doesn’t make me think faster or better or make me more efficient as a designer.