Problems with redirections

I have found solution which works fine, but I would like to combine two iRules into one, using switch -globe option.

iRule 1:

when HTTP_REQUEST {
    if { ( [string trim [HTTP::uri]] contains "Client1" )  or  [HTTP::cookie exists "BIGipServerab.example.com_Pool_1"]} {
    set uri [HTTP::uri [string map {"/Client1/" "/"} [HTTP::uri]]] 
    pool ab.example.com_Pool_1

                 }
}

iRule 2:

when HTTP_REQUEST {
    if { ( [string trim [HTTP::uri]] contains "Client2" )  or  [HTTP::cookie exists "BIGipServerab.example.com_Pool_2"]} {
    set uri [HTTP::uri [string map {"/Client2/" "/"} [HTTP::uri]]] 
    pool ab.example.com_Pool_2

                 }
}

I need to be able to add more clients, but I have to route them to either pool 1 or 2 only. If this is not possible I'll create 2 iRules with switch -globe, and place clients inside them respectively. It would be nice however to have only one iRule per VIP which does everything. Tried this, but LTM is complaining about the syntax:

when HTTP_REQUEST {
set client_name [string tolower [URI::path [HTTP::uri] 1 1]]
   switch -glob [string trim [HTTP::uri]] {

  "*Client1*"
  "*Client3*"
  "*Client5*"
    switch -glob [HTTP::cookie] {
      "BIGipServerab.example.com_Pool1" {
        set uri [HTTP::uri [string map {"/$client_name/" "/"} [HTTP::uri]]] 
        pool ab.example.com_Pool1}
}
}
   "*Client2*"
   "*Client4*"
   "*Client6*"
       switch -glob [HTTP::cookie] {
      "BIGipServerab.example.com_Pool2" {
        set uri [HTTP::uri [string map {"/$client_name/" "/"} [HTTP::uri]]] 
        pool ab.example.com_Pool2     
      }
    }
  }
  }

Any suggestions?