Women and Armor!

[Felis]

Those were whores. Hardly typical of Miqo'te as a race. The clothes they were wearing was underwear (which covers more than the Coliseum Armour btw). And before you say 'they were dancers' one of them explicitly stated they would have sex with you for money.

Miqo'te companion personality (from october 2010):

Miqo’te Female
A lady who knows what she likes, and likes a little bit of everything. Don’t be fooled by her coquettish manner and all-too-apparent charms; in her breast beats the fiery heart of a warrior. Not to worry, though, she’ll be gentle—assuming that’s what you like.

[Aegis]

Miqo'te companion personality (from october 2010):

That's cherry picking a single NPC. What about Y'shtola, was she flirty or seductive?

The leader of the Sirens was, and she was Hyur.