Nobody has said anything about this because it's impossible to answer accurately.
As an Off Ramp 3 with Superclock4 owner, I'd hazard a guess and say it would likely make a positive difference with your Bryston. Possibly a big difference and even an 'oh my god' difference. The Bryston is a nice DAC but you won't know how well it actually controls jitter until you feed it with a truly very low jitter source. I've often wondered what one of Steve's boxes with the better Audiocom clocks would do for the nicer DACs on the market now.
Steve's implementation of SPDIF is very likely very close to as well as it can be done. Off Ramp 3 coax SPDIF has proven itself in my little high resolution system with undoubtedly very low jitter characteristics in focus and sound field. There's really no practical way to say what it will do for your system unless you try it.
I'd think a good, easy test for any digital audiophile system would be to put a comfy chair in a prime listening spot, play an excellent quality stereo recording, turn out the lights (for a completely dark room) and try to find the speakers with your mind's eye. If your system is doing a proper job you shouldn't be able to see the speakers. The sound should be in the room, not coming from the speakers. Jitter stifles that quality. If you can easily find the speakers with the lights out, something isn't right.
You might want to try a M2Tech Highface with a BNC connector (since the Bryston is made for it) before trying anything else. It's a relatively inexpensive gamble that may give you a big improvement over the Toslink connection you have now.
