I think the advantage of that setup is that it sounds like your Paw owned the male AND the female? I'm all for as little intervention as possible, but at the same time I'm not willing to accept a bitch I don't know into my yard and just leave her out their with my dog for an indefinite period of time. I had one experience with a bitch I didn't know left at my house to be bred and will NEVER do it again unless I already know the bitch and the owners very well. She was extremely uncooperative for breeding without her owners around and was not receptive (that's putting it lightly) to the help I had on hand (a couple who has assisted breeding dozens of GSD litters). On the flip side, we also had a friend come over with her bitch and were able to just turn the dogs loose, let them tell us when her bitch was ready, and get the deed done while we chatted and supervised. If I were breeding dogs that I owned and knew, I'd probably be more hands off (though not quite what you describe since my dogs are already house dogs so I wouldn't turn them out to be bred and whelp).
Liesje & pack
Coke (All-American 7/7/06) couch warmer extraordinaire
Nikon (GSD 9/7/08) U-CH SG SCHH1 KKL1 T1 FO PA TFE-II FDCh-S CL1-R UJJ U-CA HIT TT CGC
Indy (All-American 5/10/12) flyball star in training
Legend (GSD 10/22/13) the legacy continues...
Rainbow Bridge Kenya (GSD) U-CH FO OB1 CL1-R CL1-F RA HIT TDI TT CGC