I have been using Wkhtmltopdf to build pdfs in my application for quite a while. It has never caused any harm. Actually it has always "just worked" and is a good fit for my app.
I was going to say the same thing. I actually had to go back and check to see if that is what I was using. I set it up so long ago and have never had to mess with it that I forgot. Works great for me!