Oh YES. Very much so!
When I started Fallacy 2 years ago, I hadn't drawn comic before and it showed. I had no idea how to combine active characters with backgrounds, drawing same characters again and again was a struggle to make them look the same each panel, layouts and perspectives difficult sometimes painful to make, the list goes on and on even if I had pretty solid grasp on drawing. But I had very limited comfort zone and I was constantly outside of it.
Now my production time for a page has gone down significantly as I'm so much more comfortable with drawing comics. Repeat has made drawing characters much easier and streamlined it, I'm finally starting to understand how to make characters interact naturally with environments, hard poses come easier than before same with perspectives. I'm trying new things with layouts (man, I really like one future page thanks to that)... Basically, I'm starting to figure out how to do this comic drawing thing. xD
I have still so much to learn and so much room for improvement but this is also so very rewarding.