We were in Inuvik during their annual summer art show. We are not art slobs, but there were a lot of activities planned to coincide with this annual event. You might want to check that out. I think it runs for a couple of weeks.
We spent a couple of nights in the c.g. right in town. It was quite nice and very handy for walking around to see things.
There is a car/truck wash on the far side of town. I would recommend making it your first stop to wash off the road salt and grime that will cover your vehicles. Do this again when you get off the Dempster on the return trip.
I think the new road to Tuk is now open. We flew to Tuk and enjoyed the flight. We were able to look down and see hundreds of beluga whales. It is an interesting stop. We were surprised that the ocean water was as warm as it was. I guess because it is shallow and gets lots of sunlight during the summer months.
Take as much food with you as possible. Prices up there are horrendous. Also make sure your tires are in good repair and that you have a spare and extra belts or other necessities in case of minor breakdowns.
It is definitely worth doing.