Ever since they made poisons proc on expose armor most rogues have not been using this trick anymore and it's annoyed me a bit, but I've created a work around for anyone interested in it.

Code:
/equip [mod]item:48511;[worn:mace]item:48509
/stopattack [mod]
/use [mod]Premeditation
/use [noworn:mace][mod]expose armor
/cleartarget [mod]
/targetlasttarget [mod]
/stopattack [mod]
normal press = equips your primary weapon if mace is equipped -> expose armor
shift or alt = CC safe expose armor
ctrl = equipping mace -> CC safe expose armor

The idea here is that you press your modifier of choice (will require multiple presses) to expose then press the bind without a modifier once to equip your primary weapon once again, it shouldn't start the auto-attack if you do a single press.

This "version" requires you to have a mace in your bag without or a non damaging poison, but you can easily change it to any weapon type you want. If you're having any problem or improvements please leave a comment, thanks.