It has grown on me. I have come to enjoy it - finally. I gave it a 7/10 but now I'd give it a 7.5/10. 10 being U2's bestest ever song like Streets, WOWY, One, Sunday bloody sunday, Grace, etc.
But it's a bit like vertigo in that it's one of those songs which you think are good songs, but never really have a high desire to listen to them. I'm listening to it now because it's new and sounds new, but like Vertigo as it ages I'm not sure that out of no where I will jump up and say "hey you know what song I really want to listen to? Get on your boots" 10 years from now. Right now I have a real urge to listen to Ultraviolet. I really love that song. But I don't know, I reallly do NOT know whether I will feel about the same about this song.
Some songs take time to grow on you but it is imperative that you don't end up MAKING yourself like the song - getting stuck in the river of peer pressure and force yourself into liking the song.
Get on your boots is a good song. Hell, it's a very good song. But it lacks that little bit of spark, that little bit of magic that turns a good song... which it is... into one of the very best.. which it isn't.