Delete offine wallet after paper backup?

I have read all of the posts I could find on the "offline wallet" concept in Armory.

I think it's great, but there is one question I have not seen asked (and answered) directly, so I'm going to ask it just to be sure.

1) I have created a wallet on an offline Ubuntu laptop
2) I created a paper backup and tested importing it without issues
3) I created a watching only wallet on an online computer
4) I sent some coins to the offline wallet via "receive coins" in the watching-only wallet

This laptop, however, is not *always* offline. So what I really would like to do is delete the offline wallet.

My understanding is the paper backup makes this entirely safe. (Assume the paper itself is physically perfectly secure.)

At any point in the future, I could restore the wallet from paper backup and spend the coins - correct?