Update: While getting out my old bag, I found a smaller rolling backpack in the garage that was abandoned by the kids when they got their Zuca bags.
I can fit my skates, guards, etc. inside along with my portfolio and a few training tools. I'm going to use this for the foreseeable future and keep my equipment and reference manuals in a separate tote to bring in from the car when needed. It's nice to have wheels that turn freely and these work really well! Best of all, the price was right. (Free!)