LaPed, I've only worn the Ministry of Supply tee once, but the fabric is lovely. In practice, it hangs more like a short-sleeved tee than the cut would suggest lying flat, but I like that it doesn't cling to the upper arms. I haven't washed it yet, so I can't report back yet as to how it holds up over time.
Angie, I'm excited to go to Amsterdam. We skipped it last time were in the Netherlands, as we spent our time with family friends near Utrecht, where Kevin lived as a child. This time, we're spending some time in North Brabant (Efteling! but also where some genealogical research says parts of my family came from), along with a day in Amersfoort, before making our way to Amsterdam.
Jaime, the Rothy's are essentially slip-ons and they'll be used for the exact purposes you describe.
Irina, I keep trying the whole t-shirt under sleeveless dress thing and I've determined I just can't. It makes me feel like a kindergarten teacher. I run very hot, so I'm not at all worried about being cold, but we did purchase some heattech pieces for my husband, who's the opposite. Also, see my note to Jaime above about the slip-ons!
kkards, I seriously can't remember the last time I was cold. Maybe standing on the Bay Bridge vista in San Francisco wind a few years ago? The Eileen Fisher poncho is my wool scarf, though. It's a great travel companion and doubles as a blanket.
pirouette, I will bring gloves and a beanie. The EF poncho doubles as a scarf. Actually, that's how I wear it most. Maybe it's because I live in California and don't need them that often, but I think I put gloves and hat into a non-wardrobe category in my head so just didn't include them here. In my mind, they're more like an umbrella--functional, but not part of my wardrobe.