Question about the Moby Wrap?

Does anyone have experience with the Moby Wrap? I am looking into getting a sling for my 2 month old daughter that I would like to last into her toddler years. I like that it can be adjusted for so many different positions and that it distributes weight evenly over both shoulders. However, I wonder how hard is it to use? Is it difficullt to get a snug, secure fit if you don't have help tieing it?