Pilot pete,yes you will get the scenario whereas the 'landing'vis is lower than the T/o vis-due to the theory that the Fed's give more leeway to a Dynamic situation than the static situ (on the ground)
One needs a certain RVR for T/o,as stipulated by the Ops spec.
namely 600'-1200'feet (north america)depending on the airport/runway lighting and equipement.If the weather is on Minimums for T/o-one needs a T/o alt(within 1 hour twins/2hours more than twin)...That having been said ,one can always return in the event of EMER'on a CAT3 arrival(Sim practice heart attack etc).If the CAT3 goes bust,then the Cat 2,or the Cat1,with the required increase in RVR,is required for the return.
Basically 600 rvr for T/o needs Centre line lights/markings-if no centre line-1200 applies
