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yes, if layout is important (especially math intensive papers) do yourself and favor and take the opportunity to learn LaTeX.
After switching from MS Office to LaTeX for my Mathematics work, my productivity increased 10 fold.
I've published 17 books with it. Works great on my Mac and now on Linux as well now that I discovered WineFish (previously I used Kile and had trouble when I changed font size, the combo box would stick and so it was a pain to use).
on OS X I always used TexShop. I added bibtex when I wrote my Paper for my Senior Seminar class (man does bibtex make it super easy to deal with references in a paper, no matter how long git is).
Now on windows I use texnicenter. it has all available documentation built in (the stuff I used while on the mac) and the IDE environment is very good.
I played with Kile and loved it as well. never tried your app before.
I use LaTeX for long documents/books that are mostly text. I wouldn't use it for a picture books though. I made my picture books with Scribus.