I did something like this back in July...one pond of Salmon, sent through the grinder attachment of my wife's Kitchenaid, seasoned with fresh dill, salt and pepper. I rolled it out and make a quick "crab dip" with canned crabmeat, parmesan cheese (freshly shredded), mayo, salt and pepper, onion powder, and a new product that 'Philadelphia' has...cooking cream (basically cream cheese, but designed for cooking, they even have flavored creams) and spread that, added fresh asparagus, rolled it and cooked it in the oven for 1 hour (two reasons-to attempt to keep it together, and no room on the smoker, as I had a brisket and some other stuff on there...)then moved it over to the smoker for an hour or so.
It was the hit (food wise) of the party....everyone loves my brisket, my two suckling pigs, and the sausage fattie, but people who dont eat fish were telling me that it was outstanding!
Your recipe sounds awesome as well. We have a Christmas party in a couple of weeks, I just may try it!
Justin