I ran ghetto tubeless on my SS tricross, using electric tape and some wire bead Spesh tyres.
Worked very well. Ran lower pressures and absolutley no punctures.
Big downside was the tyres were so tight to get them onto the rims.
So would imagine with a stans rim would be a perfect solution.
Regarding the differences between the 2 rims. It is a fair chunk wider so the tyre may be more likely to roll/burp off in corners.
Jon