Utility drivers don't go through a 30 day qualification period like full-fledged FT package car drivers, and won't likely be DQ'd unless they hit something. They expect new utility drivers to be about 50% as effective as the veteran drivers.
Of course, they will increase your workload as you show you can handle it. You can worry about it not working out, or you can see that other people with no previous diad experience can get through it, so why not you?
It would be great for getting better at driving, backing, startup routine, package selection, etc. All that experience would help you to successfully qualify, if you ever tried for permanent FT package car driver. That experience could very well be the difference between making and not making it.