There are plenty of oils on the shelf that will work quite well in a high rpm 4T.
And probably as many of these oils will also be fine for wet clutch use.
Using an oil that is certified for wet clutch motorcycle use, means that the oil is claimed to have been tested to work with a limited amount of slippage of the clutch.
You will normally pay a very huge premium for using moto-specific, certified oil.
But many other oils that are not marketed as moto specific oils will also pass the same testing criteria.
The heavy duty 4 cycle engine oils (often called diesel oils), have proven to be great fluids in all sorts of high performance applications. And as mentioned, they are available just about everywhere, and come at a very economical price.
Great choices for those who change out as often as they should.
If economy is a huge driving factor, consider Exxon Superflow 10w-40/20w-50 passanger car oils. It can be had at Pepboys and others with rebates for ~$.79 qt. and the stuff holds up quite well in high performance 4t's.
I wouldn't suggest using ATF in a 4t.