Overlord

[David75]

It is true that his attire was minimalistic compared to when he's in Nazarick.

I guess he feels that's enough to beat Shalltear.
It partly explains Cocytus probabilities, that were a bit low for Ains. 30% is already too much of a gamble for such a small objective, justifiying getting some help if it was his maximum capacities...


But it isn't the case. He's been there with lots of handicaps.
I guess it serves several purposes:
He does not disclose too much about the extent of his capabilities to any spies... Or even his underlings.
He shows everyone he's boss, particularly his underlings...

[Kraco]

He does not disclose too much about the extent of his capabilities to any spies... Or even his underlings.
He shows everyone he's boss, particularly his underlings...

Actually he's disclosing quite a lot about his personal capabilities since he has nothing else on him in that simple cloak. Except those ice cream sticks, but it's quite possible anybody seeing them wouldn't know what they are looking at. He's not disclosing anything about his origin, his possible associates, or any powerful artefacts he might possess (since it was such an item that took down Shalltear).