Pumpkin Nitro Mousse? I want to make little pumpkin mousse brûlée deserts, and I also want to play with my new whipped cream dispenser. Do you think pumpkin purée would do bad things to my dispenser?
I swear I've seen TV chefs doing stuff like this, but they don't actually pay for any of their equipment so I doubt they care much if they ruin something to get a result. I don't have a production company buying my kitchen toys though, so thought I'd see if anyone has tried this and maybe I can learn from your mistakes/success.
Anything that you can put through a fine mesh strainer will likely not be too much of a problem in a whipper.  In fact, the ISI website has a recipe for pumpkin mousse. You should find lots of advice on the web, as this technique was quite popular for a few years.