I got back into softboots last year. I got Burton Driver X boots, they seem very stiff, can't imagine tweaking any tricks in them. Also got Burton Genesis X bindings which I let my buddy pick out for me who runs the Burton shop at Sugarloaf. They seem stiff and carvey. Except they don't allow angles beyond 36 on the front foot and 27 on the back foot, so that's where I put them at first. With size 10.5 boots I would still boot out on hardpack if I tried to lay out carves. I have a Winterstick Seth Wescott 164. He has the same size boots so I figured the board would be a good width. Once I gave up on the idea of fully laid out carves, I had fun carving at moderate lean. But it didn't seem quite right, carving with a forward facing posture and the highest binding angles I could on softboots - like trying to fit a square peg into a round hole. I had seen @trailertrash carving full on alpine-style on his Coiler BX and Flow bindings, but he has no boot-out issues. Then another master softbooter, @jburrill, suggested that back foot angles higher than 15 degrees kill your toeside power. So I tried backing off to 27/15 and I'm loving it a lot more. Everything about it feels better - the carving, and the not carving. And he's right, toeside is way better this way. It's fun to be on a "normal" snowboard again when conditions aren't good for alpine. Makes me feel like a kid again.
I've concluded that getting a softboot setup to compliment a hardboot setup and then trying to ride the softboot setup like a hardboot setup is missing the point. If I want to ride that way, I'll go get one of my alpine rigs. I'd be interested to try a wider softboot board to avoid all boot-out, like Ryan Knapton.
Just for fun here's a pic of Seth Wescott from Sugarloaf's facebook page last week, laying it out on a Winterstick Roundtail 158 he was testing (which is wild, considering he's like 6'1", 195). I believe he usually rides at 27/9, so he'd boot out on hardpack too, but it looks like he found an accommodating patch of soft snow.