Yeah I have a Steamroller and annoying the fork isn't disc ready. I have Gravelkings on it and under the brake the clearance is ridiculously small, so anxious to upgrade, but finding a second-hand Straggler fork is as rare as hen's teeeth. Anyways GLWS, great frame.
Going fixed disc? Perfect commuter imo- I rode this as one through February, great fun! Took off the rear brake and put on a 6 bolt cog