Wait till you use it on the insides, no more mess.
Tip when using the combi, put a little dishwasher rinse aid in your cleaning solution, plenty of slide with no suds, your water goes on much thinner, I use mine with the old Unger bucket on the belt, I can put 2 mugs of water in it and do the whole of the insides of a big pub/restaurant.
If the glass is dirty, or there is bird muck on it you can still give the glass a good scrub, just push the handle down towards the glass, this lifts the blade clear and you can scrub away.
Oh, and don't forget to dog ear the blade for less detailing.
Half a day with the combi to get used to it and you will be flying.