You can still buy both styles. You have the Ion, your buddy has the EVO style. All you need is the Ion tank ring for a Yamaha/Ducati 5 bolt - DP07.
LINK
The tank rings are cheap. I have one of the black, (EVO style), tank bag side rings, new in package. I've had both styles and the black one latches and unlatches nicer. PM if you're interested, I'm never going to use it and will make you a good deal, or just make me an offer what it's worth to you.