did just try $snicks and that worked
so all you need is a small alias to select all nicks
like this
Code:
alias nickall {
  %channel = $1
  var %all.nicks = $nick(%channel,0), %i = 1
  while (%i <= %all.nicks) {
    var %nic = $nick(%channel,%i)
    sline %channel %nic 
    inc %i
  }
  sline -r %channel $me
}