Yeah, I read both of those comics. And in my own experience as well, drawing my comic has helped me improve my work a LOT. I still need to get faster at drawing though (so it doesn't take me two weeks to update). Of course, part of that is the fact that I have 6 papers and 6 projects in one class this semester. So basically, I get to draw one week, then I cram all of the work for a two week project into 3 to 4 days the next week. And at some point I do all the work for my other classes.
Sometimes I wonder if this whole college thing is worth it. And then I realize how much I loath the thought of working construction ever again. That was the worst summer job I ever had.
Wow, I'm just ranting now. I have gone completely off topic. Well anyway, if you love drawing then definitely try making a comic. It's a lot of work, but it's fun.