I do find this sort of stuff fascinating and also faintly frustrating but of course my mother tongue is (in)famous for being a bit loose at first sight.

According to one of my employees (Polish) Ł sounds roughly like w as in win or water but not as in what. A quick read of this: https://en.wikipedia.org/wiki/%C5%81 doesn't help too much.

Does enforcing Ł instead of say w cause your written language to fail in some way? I don't want to cause offense, I want to understand the causes of difference.