The trick with Shimano hubs, is before riding them, pull them apart and put some grease in them, as they come with a paltry amount straight from the factory. Once you've done that, they're pretty much maintenance free for the rest of their lives.
Now you could argue that you shouldn't have to do that, but most cartridge bearings don't come with enough grease in them for UK conditions either, so TBH you could apply the same rule of thumb to Hope hubs as well.
Essentially you're looking at the extra money for a bit of fancy finishing. If that's important to you (and it's a perfectly valid POV) then buy hope, if not Shimano will do just as well
Nice to have a choice, isn't it?