A time slip method is used for the tri nations Union coverage, so they can fit in as many commercial breaks as they want - or need to fulfill their sales obligations. It's using the same machines we use for the replays and onsite editing of packages at the OB's, so its not a hard thing to do. If we can sqeeze a break in and not miss any play, fine, it doesn't get used, but when play starts quicker than expected, then thats when the time slip begins. By the time half time comes around, and the half time segment is going through, then 2nd half kickoff is "live" once again, until the time slips begin. I've never seen the telecast more than 3 minutes behind real time at any one point - no one seems to get upset about that, so I don't see why that can't be applied to league.
The only thing different is obviously if your listening on radio but watching the pictures, they won't match, but again, to my knowledge, no one has complained that much about it for Union.
No one misses anything that happens, the players aren't held up, and momentum isn't lost, so everyone wins. The fans, the sport, networks and the commercial sponsors.