I really can't relate to the screen fragility issue although it obviously exists. I own one of the original 2010C's (pre GSD 20) and have not had any problems. Granted, it is an overhead e-box in a WA that is really dry. I have cleaned it with nothing but clear water to dissolve any salts and then a very dilute solution of IVORY and water followed by a rinse and wipe with a micro- fiber cloth.
There is company called "Purple Schmoo" or something like that, that makes a protective film for PDA's and such equipment including Marine Electronics. I think they have a film for the 2006 but not the 2010. It is supposed to work really well. Do a search, you might find them! Catch 'em up!