If you decide to change it, maybe use the black panel at the end for the logo, and put it at the beginning. I don't think there are any real advantages to switching though... Your comics read well in the single line format.
I think if you have an odd number of panels, you could just put it in the middle at the bottom; that, or you could use both layouts. If it's an odd number, use what you've always used, and if it's an even number, use the new layout.