Check out xtreme guard, they have both wet and dry install screen protectors for Z1s. I got both but used wet first.
So far, our Z1s doesn't have a reliable glass protector. I'm waiting for spigen to have one.
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Xperia TL LT30at - Rooted
Xperia Z C6606BK - 10.3.1.A.2.67 - Rooted
Xperia Tablet Z SGP311U1 - Rooted
Xperia Tablet S SGPT121
Tablet S SGPT111