I think the Improvised Weapon Attack better to be hidden if I got some real weapons equipped(consider this Improvised Weapon Attack to be a special attack of the Unarmed Attack), because:
1. its icon has terribly disturbed the balance of nature order in the domain of Hotbar;
2. I got my hands full, no third hand to grab whatever that improvised weapon is;
3. the deadly weapon that magically perfectly matching my weapon proficiency I'm holding is waaaaaaay bettta than whatever that improvised weapon could be.