Nope 60p is not a standard format and other than computers very few devices can play it
Also at 60p you need to shoot at 1/125 shutter speed otherwise it is not smooth at all actually more jerky than regular footage
60p means that unless there is plenty of light you need video lights on all the time or it will jitter
Yes 60p is not so common yet, very true. However digital video is now more advance due to not limited for TV viewing but we can play them on high end monitors or newer TV with HDMI input.
I can't get shutter speed data from my video, but that RX100 with F1.8 lens is very bright and can produce smooth panning even in rather dim light. Also true 60p need more light. Even a GoPro at 25fps and 30fps, the 25fps is more sensitive to light. I tried the RX100 50i setting against 50p setting ( me in a 50hz world ), surprisingly its low light is the same.
I have a cheapo USD500ish Toshiba TV, 40" Regza series. It HDMI can handle 50 fps from a PC. Its direct USB video player section from memory card, can't play 50fps Sony file. I use my PC for playing most videos anyway and hooked it to the 40" Toshiba via HDMI.
You need to download free player called Splash Lite, it can handle all Sony file and in fact it can also handle a Panasonic GH2 H264 file up to 176 mbps, the Driftwood hack. This is a very light program for a CPU. Better than VLC or Windows player. I am a PC guy, not Mac.
On my Dell 27" or 24", I use Nvidia GTX580 card. My CPU is a fast i7 3930K but not overclocked.
An RX100 file at 50p 28mbps setting when panning is smooth. If i output that to the Toshiba, the panning is rather jerky. So panning being jerky is not always because of the 50p but how fast your monitor is too. The scene is a recent indoor in Taiwan airport, so it is quite low light.
The same panning scene on VLC to my monitors, is rather jerky.
The same panning scene on WP 12 ( I am on W7 Ultimate ) is also jerky but not as bad as in VLC.
The smoothest is from Splash Lite. Here again video player makes a difference on how they process the image data.
Try it and tell me about it.
The problem we have is, the highest end Blue Ray spec for home use is still low end compared to computers. More so if we compare to the high end PC gaming kind of graphics. However, all video camera being digital today and each and every manufacturer can do better and better video spec, you will see faster and faster frame rate coming. It is easier and more acceptable to have faster frame speed ( which can yield better video too ) than going beyond 1080p resolution. 1080p is a crap resolution when our TV is bigger than 40" and one watch from a close distance.
I am not video expert by any means, I just like seeing all the progress made today.