For a combined cost of about $350 for an ipod touch, wireless router, and iRFR, you can have a full function RFR device. For that reason alone, I'd buy it again in a heart beat. Add an iPad, which allows for notes to be taken on individual cues and you've got a great system.
But, there are some issues and improvements that need to be made. The device often disconnects from the console. Some days it will last for hours with no problem, some days it will disconnect about every minute (and yes, I pulled out a stop watch). This is a more of a pain if you're in the Cue List, or Playback screens as the button to return to the Welcome screen will vanish and a force close is required. Most of the time it's mearly an annoyance.
In Cue List, and Playback, the timing column is almost useless. It displays only the overall cue duration (including any delays), not the split up/down time. This makes it very difficult to take accurate notes during tech about timing issues.
On the plus side, the moving light pan/tilt control is wonderful, and usually more accurate and less frustrating than the virtual moving light control on the Element.
I have iPod Touches equiped with this app and Lightwright Touch in the hands of both of my electricians and will never regret this decision. They now have everything they need for preshow checks and trouble shooting in their pockets instead of a 3 ring binder and RFR device clipped to a belt.