Actually the technique that I and the people that turned me onto the 476 use comes straight from a Collinite representative as an answer to the difficulty in removal when its dry. Do a small section and let it dry, then see how hard it is to remove. Its almost impossible...
Thats pretty common with products like these, one application technique works well in theory, but not in reality. Lots of sealants like Klasse and Zaino are famous for "official" application techniques that are needlessly difficult.
Its may slightly hinder its durability wiping it off still wet but it doesnt seem like it. If you want to be safe apply two coats, its still easier than removing just one when its allowed to dry.