In answer to the OP's question, as I sit here typing in my Rohan bags ...
They are good to their sizes. I use the Bags and Winter Bags for casual use, and have some of their more business like stuff for informal travel and meetings. I particularly like the zippered pocket arrangements that they offer. In the business pants they are like a double side pocket, with the rear section zippered and the front section like a normal trouser pocket, although the zip is hidden in the pocket.
You get used to a "habit" of how things pack when you are regularly travelling, and, for example, I have handkerchief in the outer pocket and folding notes in the zipped section behind it. On the other side I have a purse for change in the outer and a small holder for plastic cards in the zipped section. It is comfortable and practical. Feel free to enquire if you need to know more.