Is it possible to only use a paper wallet without having a nanowallet
Yes but you can’t do transaction.
As I described in Owning nem through paperwallet with out nano wallet
I understand what you mean, but if the paper wallet has a qr code then it is possible right? Maybe its ineffcient, but nevertheless possible just like ethereum paper wallets. Also my main question is that a nanowallet is not needed, is it?
Yes but when you want sell tokens or transfer to other account you must do this via mobile or nano wallet.
Yes just like any other paper wallet, correct?? Also you would a mobile in all cases…
Need a mobile**
Maybe:) I use only XEM 
Ok, thank you