Hi David,
I don't own the Trinity, but I do own the Wilson Benesch Arcs, which as I'm sure you know are a step down from the Trinity but close enough to maybe give you a point of reference. And my room is exactly 10x11, so our situations are very similar.
In my space the Arc sounds fantastic - I do have a Rel Strata III Subwoofer (picked it up used off CL) but it's not even plugged in. The Arcs put out more than enough bass for my 10x11 room, and it's tight clean bass without any boom. Given that the Trinity is probably even a little better in the low end, I have to think it would be more than enough speaker for your 11x11 room.
I've not listened to the Scorpios, so I can't give you any feedback on the Scorpio's sound signature vs. the WB house sound, but in my 10x11 room I've also had B&W PM1 (no comparison), 805 (great speaker, not as transparent as the Arc), and Proac D2 (still have these - warmer sound, more veiled, not as open or airy as the Arc but their warmth can be easier on the ears with poorly recorded material like most '80s rock albums).
What the Arcs do well - and I imagine the Trinity does it even better - is they completely disappear. And that's a hard thing to accomplish in a 10x11 room with no treatment. The way WB gets the sound to disconnect from the box is pretty amazing, and the tweeter is so open, sweet and airy, and the Arc and Trinity share the same tweeter.
So I can't tell you if you'll like the Trinity's sound signature more than the sound from your Scorpios, but I can tell you that if the Trinity sounds as good in your 11x11 room as my Arcs sound in a 10x11 room you will be a very happy fellow. I hope this helps a little...
