Currently I use a logo in the primary navigation. On mobile it will show the logo on top of the menu instead of to the left. I would suggest that you could upload a logo that was displayed on mobile devices so that both logo and menu could fit side by side.
Btw. just donated a tiny bit but couldn’t put in a message with it, just wanted to say thanks for an incredible theme, keep up the awesome work ( and keep it lightweight 😀 )!