I got my Game Golf last week and played my first round with it at the weekend.
In round - Equipment/hardware wise I had no problems at all, device is a bit smaller than I thought it looked on all the promotional material. Device took about a minute to power on and get a gps fix and then it was just a matter of remembering to 'tap-in' each club. I found all my longer clubs fine since part of my pre-shot routine was always to get to my ball and judge distance etc just before my shot so I added the tap-in to this. I forgot a couple of times with the putter, but it was easy to add after the round. You get a vibration on tap in so you know that it has registered. In terms of playing that is all that is required.
After round - I plugged in the game golf and it offered to upload my round, which it did with no issues then I had the chance to check the round and update anything untowards. I added the forgotten putts and changed a couple of putts from the fringe to read as "off-green" I also had to move one of my bunker shots a small distance so it showed as being in the sand. The whole process was pretty easy and took me around 5-10 minutes. I then signed the round which finalises all the changes.
Summary - The device itself I found unobtrusive and easy to use. The summary map looks great and I genuinely enjoyed reliving my round and seeing where I was leaking shots and playing badly/well. However the weakest part of the whole thing is where it should be strongest, I've mapped my entire round and I should be able to get some amazing stats from that automatically, yet its just the standard GIR/FIR that you get from any scorekeeping app etc. Club distance is excellently implemented but not unique. To push this to the next level they need to devise ways of calculating performance from all over the course and displaying that. At the moment I could almost do everything Game Golf does with an app such as Swing by Swing, and then would get better stats back from it. I will continue to use the Game Golf, but hope that they update their stats on the website to really show what this device could be capable of. If they are attempting to have it as just a social way of sharing rounds then I fear that they are doomed to fail. At the RRP they need to add considerable value to a golfers round.