Suck it and see .
It will tell you if a 24" is big enough before you spend hard earned cash and if you don't like it you can always use it as a second monitor/TV- you have nothing to lose as its free.
I did try a combined TV/ Monitor once and did not like it , it was not as good as a proper monitor but was better for TV than a monitor with a TV card in the PC
Televisions are designed to providing a very different experience from a computer monitor, especially with photography in mind. Colour and contrast, often brightness too, are pumped up to give an exciting and captivating experience that will make editing images for others to view or have printed unsuccessful. Also the panel used may be inferior in the manner shown in the video above.