I had a few a year ago. They are really friendly, unless I just got lucky. They are very quick though. Mine always liked to jump out of my hand or whatever they were on and see what would happen. Very energetic and dare-devilish. I never heard about them urinating less then any other hamster though.
Edit; Adding to the friendly thing, I only got bit once by one of the 3 I had because I decided to let him eat out of my hand. No blood though. Just a little scrape.
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