It's best to not cross-chain that much but if the chainline is good you probably should be able to make this shift.
If this chain skating is happening on the trainer but not on the road I wouldn't change anything. A bike frame flexes laterally more on a trainer than on the groung because the rear wheel is locked on the trainer. If it's happening on the road and if you have a conventional bottom bracket you could use a 2 mm bb spacer to move the chainline out. Or just try a 9-speed chain.
Al
Last edited by Al1943; 01-24-10 at 08:15 PM.