I blew loading more times when I was just starting out with film photography with a Canon A-1 than any time since. Then again, I've also gotten very use to watching for confirmation that the film is advancing.

I actually don't mind loading bottom loaders at all. It takes slightly longer for me just because I have to get the takeup reel out but beyond that the process is relatively smooth. Maybe the fact that I'm pre-cutting the film with a template helps more than I realized.