I can see great potential but if it does not give me a decent amount of time to see if I can use it in my workflow without interrupting me with "buy, buy, buy" reminders, I won't be be pulling out my credit card.

I found it easy to set up, but I have found a few quirks, but honestly can't say whether they were caused by the nag popups interfering with the workflow.

An example, I opened Aperture through DockFun, quit it, and then tried to open it again through Dockfun — no way! Neither the menu or dock option would work.