Subscribed. I did Black Bear Pass last summer on a KTM 450xc. If you did Engineer Pass on that rig you'll be fine, but "the steps" section on Black Bear will be different. You'll know them when you see them. I walked it down 2/3 of that section, puss that I am. Looking fwd to hearing your experience.
Only you know your limitations but you need to be pretty salty to ride a loaded GS down "the steps" on Black Bear. Stay on the pegs and use the front brake to move very slowly down the steep section and you'll be fine if you're an experienced rider. Keep in mind that by the time you realize you are on "the steps" it will be too late to turn back.
For what it's worth, I did it on my 85 XR350 and had no problems but I probably won't do it again and I certainly wouldn't do it on a loaded GS. In my opinion it's by far the most dangerous obstacle in the entire area. I would suggest Imogene Pass if you're leaving Ouray headed for Telluride.