I have downloaded the WOW presets. I use a number in combination. It looks to me that the tone presets cancel each other if you click a second one. However if you use 1 auto tone + curve preset you can also use one of the sky presets. In addition I sometimes have added one of the Vibrance presets.
I would like the toggled preset buttons to change color or lighten so you would know what combination you have selected without having to check history.
If not a toggle how about a right click option to shut the preset off.
I guess what I am after is the ability to turn off a preset you have selected if you have several in combination without having to work back up the undo tree.
On a lighter note, we just got home from dinner with the friends we will be vacationing with. They said they are bringing their laptop. The house we have rented has a broadband connection so I won't have to do without my daily (or multiple daily) POTN fix. 
