Monk - How to equip unarmed + weapon?

[Parsalian]

This is probably a silly question, but how to equip my fist?

 

When I place an offhand wepon my fist disappear and, in combat, my character only attacks with the offhand weapon never punching. I want to use an offhand weapon with draining life. 

Edited April 3, 2015 by Parsalian

[Parsalian]

Hmm...sad. Thanks.