Answer Shape: Wants a one-sentence verdict first, then a short breakdown, and never a restatement of the question that was just asked.
Tone Preference: Prefers plain, direct language and will flag hedging, warm-up sentences, or filler adjectives in a reply.
Measurement Convention: Describes paper in grammage (gsm) and sheet counts rather than reams or imperial weights, and expects the same back.
Working Method: Drafts early in the morning, reviews on Friday afternoon, and wants reminders framed around that rhythm rather than fixed dates.