STEVEMED
We stayed at the Swan in 2003 and stayed club level. At the time we got a rate of $179 per night. For that rate the club level was well worth it. For us (DW and DS3 at the time) it was really nice to go up and grab a nice breakfast, albeit not eggs, bacon, sausage, etc.., but nice. Also to come back from the parks and grab a snack is great too.
From what I understand the Disney concierge has a lot more to offer but wow you sure pay for it. Personally we can't justify an extra $100-$200 per night just to have a little extra food and free alcohol. For us the S/D club level is just right. This however is assuming that you get it at a discount rate as I would never pay rack rate for the S/D club level.
Hope this helps,
Andy