Ah! I see! I mainly wanted to make a new save using that outfit, but I was worried about not getting the bonuses armour or robes give. The idea was to still equip armour and, eventually, robes, but that would mean create a new disguise every time I switch gear.
In that case, I could mod basic clothes to give slightly better stats, or even easier, since I'm going scoundrel, simply put more points in Dexterity.
Thank you!