It is strong enough to pick it up, but I'd never do it regularly as it is easy to tug it off when you want to, so it' definitely not very safe.
I don't see any problems with my blue plastic one with frayed edges etc.
Only thing I disliked is I hate the girly pastel colors and that they made colors like Black and Navy in the absurdly priced leather covers. But the blue was tolerable--green is probably ok as well.