I wasn't too much of a fan of the Expert Shield. It's hard to put on without getting dust bubbles, and if you screw up it's all over. This, however, was amazing:
ITG Impossible Tempered Glass for Camera https://www.amazon.com/dp/B00UVAISJ4/ref=cm_sw_r_cp_awd_24e7wb8APXTJS
It's actually made of glass, is easy to apply, and can be re-applied if you mess it up. Unfortunately, I haven't seen it for X-Pro2 yet, but I'm patiently waiting.
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