Combining user personas and user stories can be tricky. Here’s a look at some of the problems you might face:

1. Misalignment: Sometimes, the personas don’t really show what actual users are like. This can lead to user stories that don't make sense.

2. Complexity: Making detailed personas and stories can take a lot of time. This might be too much for smaller teams.

3. Neglect: Teams may forget about important situations, which can make things hard to use.

But, there are ways to make these challenges easier to handle:

• Talk to real users often to get their feedback.
• Keep the documentation simple so it stays easy to update and relevant.
• Keep improving personas and stories by using data from users.