Yep I did it a little over a year ago, for my low beam also, for the same reason, I want instant on for the highbeam. Of all the upgrades I have made, the HID was by far the best. I commute March to December, which means for half of those months it is dark in the morning, sometimes dark in the evening and sometimes dark both ways, the light output, especially on my country roads is amazing.
I did both the low and the high beam but I had to drop the high beam back to the standard bulb. I was blinding too many drivers at night and the constant on/off is not good for the bulb/ballast. I got the 35watt kit from http://www.ddmtuning.com/ Over 2000 miles and so far so good. If you go this route you will have to make a custom spring or spacer because the oem holder will not work.
I use the TC hid headlight conversion produced by Taichang in China. I think that you will like them for their high quality,too. Their HID kit has 18months warranty service. At same time replacement the defective products by free is available according for the warranty articles. Just have a try. It will not let you down.
I used a set I got off ebay for my 250. They were 4300K light temperature. As stated you had to modify the stock spacer to work with the HID bulb. I wonder if the same fix would work on the Versys. I was thinking of doing HID on the Versys but I do like the instant on of the halogen high beam so I might just do the low beam.