The t.rice wants to stick to big, long turns wherever possible. I'm 160 lb and ride the 157 as my deep pow stick in the PNW, and find that it floats well enough in even the wettest, stickiest shitpow that I don't ever have fatigue issues. It's also fast enough in the deep to beat all the low angle runouts we've got here without issue.
On the other hand, it's not really that great in tight trees. The more small, fast turns you have to make, the less happy the trice gets. On low angle pow tree days I definitely prefer going down to the more playful banana magic.
I have come across quite a few post where the t.rice 157 is able to handle fine even at 200~ lbs in general conditions but your bit regarding deep pow is really a piece of valuable info, thank you.