The best way to justify that knife is to wash it really well, take it in the kitchen, and use it. For anything, and everything. I like cutting up steak for fajitas and quesadillas with my big knives. You'll find it's not the best for slicing as it's a little thick, and the guard can get in the way. Also, the recurve takes some getting used to. But it can be done, and it's fun, if a bit juvenile. But, boys and their toys! Hell, the next one on kitchen duty for me is a SOG Agency, or another turn with the S1 Bowie.
If you're a collector, rather than a user, then the knife itself is justification enough. It's a very cool piece, and I'm considering one myself. As a user.