Nendo's Architect Bag holds long drawings in its middle
Architect Bag - Etsy
Amazon.com : Luxja Breast Pump Bag with Compartments for Cooler Bag and Laptop, Breast Pump Backpack with 2 Options for Wearing (Fits Most Major Breast Pump, Suitable for Working Mothers), Gray : Baby
The Atelier YUL designs minimalist carryalls especially for architects
Best Bags for Architects - Carryology - Exploring better ways to carry
8 Top Bags for Architects and Designers - Architizer Journal