Discussion: dialing: how to match .sees to a certain +end?

if i have a switch that dials multiple endpoints concurrently or in close sequence, how (short of checking every ipp returned in a .see) am i to determine which responses are meant for which dials? would it be considered bad form to issue all dials from dedicated short lived switches? if they never send a _ring or .see themselves back to a switch, they should never be considered part of the network (and a valid destination for +ends/messages) correct?