I SAGed it on day 4 of a 7 day tour of California. I had a fever, nausea and a sore throat, so it seemed like a good idea at the time--especially since temperatures were supposed to be in the mid 90s that day. We had a rest day the next day and I was feeling almost human for the day of riding after that. I don't think I would consciously choose to sign up for a ride thinking I could SAG if I needed it, but I think I would have misgivings about signing up for a ride that didn't offer it. On the tour I just mentioned, SAG support was advertised, but the woman doing it was not being paid (and was therefore, usually hard to find because she was off doing her own thing). She was, in theory, available if you called her on the cell phone, but we were in pretty remote areas with spotty to no cell service. This kept the price of the tour low,and in the end, everything turned out just fine. But I might have thought twice about signing up in the first place since it had been my first tour. I would actually choose to tour again with this outfit now, since I know what I can do on a multi day tour.