Having an out of state license, for example, a Wisconsin or Indiana license and being charged with a DUI in Illinois presents special circumstances.
First, the Statutory Summary Suspension which suspends a person’s license who is charged with DUI will only suspend the driver’s ability to drive in Illinois. So, you can drive in your home state and everywhere else in the country, except Illinois.
Second, provided you receive court supervision on the DUI charge, your home state may or may not treat the court supervision as a DUI conviction.
I have experience with Illinois DUI charges with individuals whom hold an out of state license.
Some states will treat court supervision, (the Illinois court is not entering a conviction) as a conviction because you plead or were found guilty.
As an attorney handling a client with an out of state license and an Illinois DUI charge, I would determine how your home department of motor vehicle (DMV) is going to treat a court supervision before we decide if court supervision is an option.