I have sent an email to Peter, and one to Hope to see if their 100x12 endcaps are available, as they list them on their site, but I cannot find anyone selling them.
ETA: As ususal great communication from Peter, but not the best news. My fork is 100x12, but he does not have 100x12 axles yet. He is going to ship my frame, and other parts, then ship the axle when he gets it.
Also spoke to Hope, and they have the 12mm front hub conversion kit in stock and will ship it out today!