Yes, I did in fact water test this ink! It stood up very well to the water.
This scan was done on an HP Deskjet F4280 at 600dpi.
Note: Because these scans are done with a light emitting printer, actual colors will, more likely than not, be slightly darker than they may appear, here. The colors shown, here, are probably a bit more reminiscent of what the ink would be like under a bright light or if it were held up and viewed with a light behind it.