I had one but I felt like I was getting my hp blasted so I swapped one for more defenses
Is it still better to use int armour even if solo ?
Yes, invest in some cheapish heal charms to use in your accessory slot
Thoover is correct here, also, be aware that the ACC slot ONLY activates the Charms Enhanced Effect @ minus 25%, also minus 25% Mana Cost when casting. If (BIG IF) you come across a Heal charm that hass EE +X Stat (Str/Dex or Int), YOU MAY want to put it in the Main Slot, giving you 25% more heal capacity but the other stat could influence your Melee attack as well.