how to switch on - off store pagenating within one store

[flora-extjs]

Hi All,
I have a store - model defined like this

proxy: {
         type: 'rest',
         url: 'server/rest/mydata',
         reader: {
             type: 'json',
             root: 'data'
         }
     } 

default paging is 25.
I know how to supress pagenating at all. But I need this store within some codesnippets - most with pagenating - but somtimes without paginating. Is there an example how to solve this problem?
Thanks in advance

[Gary Schlosberg]

Can you create two different instances of the store? Seems like you might want two different server scripts (one for paging, one not).