Permit specif IPs to pools, all others see simple maintenance page REPOST as requested

This may be what you are asking for, change data_group_name_here to the real name of the datagroup you created:

when HTTP_REQUEST { 
  if { [class match [IP::client_addr] equals data_group_name_here] } {
      switch -glob [string tolower [HTTP::uri]] { 
        "/jumper" { pool jumper_JMPRIIS_Https_Pool 
                    log local0. "redirect irule pool jumper_JMPRIIS_Https_Pool" }  
         "/" - "/annie" - "/bugg" - "/charles" - "/dog" - "/fashion" {      
                    pool fashion_FHSIIS_Https_Pool 
                    log local0. "redirect irule pool fashion_FHSIIS_Https_Pool" } 
         default { pool skijump_SKJWEB_Https_Pool 
                    log local0. "redirect irule pool skijump_SKJWEB_Https_Pool" }
     }
  } else {
    HTTP::respond 200 content {Maintenance PageSite is down, try again later.}
  }
}