We've been using lazy load for quite some time now and it works fine for us. If you want to load a page with lots of images then you really have to use it.
The main thing to remember is to put a <noscript> tag next to each image and in there you have you normal <img> tag which allows google to still crawl all your images
See the source code at
https://www.tacamateurs.com/ to see what i mean