I’ve taken a few different bikes and the DH bike was by far the most fun, I could quite happily spend a whole day just riding Enter the Dragon.
Yeah you can do it fine on a trail/enduro/all mountain bike, as you can every other DH track in the country, but having the extra travel will encourage you to try more ambitious lines which helps to build your confidence. And once you are confident clearing a jump or drop on a DH bike you can then transfer that know-how to your other bikes and the cycle starts all over again.
Only problem is that if you’re not used to a DH bike, you probably won’t be any quicker on one first time out. I like to Strava all my rides and noticed when I first got mine about a year ago I was a fair chunk slower than on my 160mm FS, it took a good few weeks for me to get up to the speed I was at before.