Out and a bout/Daily useage, The Ringke Fusion case + a glass screen protector with a halo :-\ Annoying but bearable, after three weeks no dust has gathered within and doubt it will. If Im working at warehouse/building environment I usually slip on my Neo Hybrid + Dust caps on the charge and earphone port that I got off ebay. Seems like over kill but the dust clumps Id pull out of my S3 where shocking after working in certain environments after a few days!
I really would also like a glass camera lens protector, But havent seen any avaiable for sale as of yet.