Yes you do:
Fetters has hit/mastery. Shadowgrip has crit/haste. You'd be reforging into hit/mastery/crit on Fetters, and crit/haste/hit or mastery on Shadowgrip. The former is more useful. Your stat priority is correct though, but like I said, you're confused about the 2nd secondary stat on these items (Fetters has mastery, not haste, Shadowgrip has haste not mastery).
You seem to be a little head-stuck-in-the-sandish. Believe it or not, some of us do know what we're talking about, even if you don't agree with us.