If you carry a full change of clothes, as well as some gear and 2 pairs of shoes. Definitely go for this bag as it has about 30% more space. 45L in total internal capacity. It also has two shoe/wet pockets which can be used for used towels and to stop cross contamination.
Yes, this bag has two shoe compartments, each of which can easily fit size 15 shoes. If the compartment is not sues, then it just folds flat and makes more space in the main compartment.