I wondered who was going to be first to pull the Wallaby out of their hat. You are most welcome, especially when you cn put it to such good use!
Both are very nice looking flies, the Weasle compliments the thread and gains nice body "bulk" with the extra wraps. The Wallaby gives contrast to the primrose and the extra length of the fibre will give the same body bulk, but in a different way.
I know a few Tasmanian tiers that use a lot of Wallaby to target their wild brown trout. It should serve you well. It should also not be as absorbant as say wool (the guard hairs are designed to repel water on the animals hide) and may hold your fly higher in the water- in or just under the film.
Gig, the Wallabies released here are just another example of an Aussie coming here to become a pest.

. (The other is your possum).