These shoes are both comfortable enough to use for training on the road as well as being quick enough for race day so perfect if you aren't too serious about your running and only want to invest in one pair.
I also used these shoes in an off road/trail half marathon and still found them to be quick and responsive. The grip was good enough but obviously aren't a trail shoe so weren't perfect.
I bought these shoes to replace a previous pair because I'd liked them so much. They eventually gave way and a hole emerged by my left big toe but I had done a fair few miles before that happened.
Overall, a great pair of shoes - would definitely recommend.