My friends all have valid permanent driving licenses.
Is the swiss learner's permit valid in Italy? I'm planning to go with my friends to Italy by car to have a vacation there while praticing driving.
The learner's permit is not valid abroad. It is only valid in Switzerland under the conditions defined for it. Each country has a different model and only the actual driving license is valid in other countries (if it meets the international criteria)
Driving with the learner's permit abroad, you could have major problems, including with the validity of the insurance for the car.
Is a Swiss learners permit valid in another canton?
It's a Swiss learners permit, issued based on federal law. It is valid in all cantons and asa bonus also in Liechtenstein . Vice versa, the learners permit from Liechtenstein is also valid in Switzerland, which becomes specially relevant in case of motorcycles.