Totally — nothing changes from what you already have with Deblock. A Pocket is just a sub-account within your existing account, not a separate product. Same terms, same protections, same safeguarding rules that apply to your main balance apply to every Pocket too.
How do I close a Pocket, and what happens to my money?
Open the Pocket, tap the arrow down (below the Add money / Withdraw buttons), then select Delete.
Any remaining balance moves back to your main account automatically — nothing to do on your end, and no funds are lost.
Once closed, a Pocket can't be reopened, but you can always create a new one with the same name later.