Honestly, no. But that's because I'm the type of person who does not let perceived obstacles stop me from doing what I really want to do. I like challenges.
As you said, the curved patterns will still have a higher degree of difficulty, simply because they're curved. I started an apple core quilt several years ago and really struggled with the curves. I put it aside for a couple of years and recently brought it back out and discovered - happily - that my skills have improved over the years and I no longer struggle with those curves. Moral of the story - try it, keep practicing, and you
will get better.