There’s still another option to be considered and that might be the one that will suite you best:
If the customer records a MXF OP1a with the S1000, he will be able to play the file with the F1000 and choose which part you will need to extract.
This requires a network without baseband problems and a fast server, but it is possible to do sub clipping with growing files.
By the way Kasama, just noticed that the clip list on the S1000, the batch recording option, only works if its ingested by tape, not 24/7 (live feed).
As far as the frame chase option, it will only work if the costumer knows what he wants to be trimmed, if he doesn’t then this option is not suitable.