1)
How is her husband known in the gates?
1.
Rashi: He stands out from his colleagues because his garments are nice.
2.
Malbim (Derech ha'Muskal): The husband of this Eshes Chayil is her Sechel. It is known in the gates, where they speak about enemies of the Nefesh in the gate, i.e. the war of the Sechel with the Yetzer via the laws of Chachmah, which teach to go in the good path and guard from evil.
2)
Why does it mention sitting with "Ziknei Aretz"?
1.
Malbim (Derech ha'Muskal): This refers to investigation in ideas and ways of Binah. Zekenim understand Mishpat in the ways of Binah.
