Monochromatic camera is pretty expensive, but this one seems cheap enough, the specifications are attractive, featuring a large 1/2" chip with high pixel count, it also supports ROI to increase frame rate at the expense of smaller capturing are, which makes it very flexible.
The large chip size will mean simple for full disc shot, no need to do mosaic.
For solar imaging since the exposure time is relatively short, especially for surface detail when the sky is good, noise shouldn't be much an issue.
If I finally go for remote imaging and didn't want to leave my DMK under the sun for long time, I'd definitely go for one. Previously, CCTV + frame grabber will be the only way for cheaper price, but now we have a USB 2.0 option at a very nice price.