Yes, in spite of some being dubious about being able travel around the world for 81 days with cabin baggage only we did it and it was so worthwhile.
Great way to inhibit spending.
So much easier to manage. I have decided I am never using a suitcase any bigger than this again.
Another thing that helped us along the way was the ScotteVest, www.scottevest.com
Lightweight, shower proof with lots of storage pockets, these vests were great for storing travel documents, passports, cash, eftpos cards, smart phones, keys, and even a pocket big enough for an iPad. Most days I could get away without having to take a handbag which I considered a bonus.
Not planning on going anywhere in the near future but these items will be essentials should travel plans arise.