I'm not sure it drys completely quicker, but it begins to start to dry quicker - if that makes sense. So, you can see if a rouge streak is about to appear very quickly.
The only thing I have noticed is I'm using more water - I think this is due to the hose expanding more under the pressure. So you get a gush of water when turning the brush on, but eventually levels out. But even so I'm using a fair bit more.
I think eventually I may invest in some Thermobore, or maybe I just need a decent flow controller

.
To be honest that's the only negative I can find with using hot water - cleaning with hot water just feels right somehow. After a week of using it in cold conditions - would I like to go back to just cold, I don't think I would.
On salted windows I think hot water cleaning is pretty much the perfect method for window cleaning. I've done a few properties this week that normally give me salt streak problems, but this week there was a vast improvement in the quality of clean on these types of window. The odd rogue salt streak, but no where near as many. Normally I have to go round a second time to get them perfect , but this week just the only odd pane to rerinse.