We currently do this today. We use an Intensity Shuttle hooked up to a Dell Optiplex 980 and stream it using Adobe FMLE to our CDN. We initially had a problem with the preview window open on FMLE causing dropped frames (probably a bug in the BM directshow driver), but once we turned off the preview window everything worked fine.
I've also tried it with Microsoft Expression Encoder 4 Pro, but it suffered from the same 'preview window' bug and I couldn't figure out how to turn it off like I could with FMLE.
Since then BM's documentation now says Dell's are not supported, so if you don't have one you shouldn't have a problem.