Recent letter from Mescalero Tribe Council explains that climbing Sierra Blanca is no longer allowed due to mountain being a sacred site, etc. Last year my request to hike was refused because of the drought conditions, now apparently no climbing permitted whatsoever. slowbutsteady
However, when I made the summit on May 15, 2014, the summit mailbox had a nice notebook full of names and dates well after your 2007 post. Officially, Sierra Blanca may not be permitted, but I wouldn't let that stop anyone, as the evidence is that visitation is relatively frequent.
Summited 8/18/15. Climbed up the Ski Apache maintenance road to the top of the lifts (1900 vertical - about an hour). About 0815 talked to a young man (who I suspect was Mescalero Apache)doing maintenance on the top of the zip line. I asked where the short trail was up Lookout Mountain, which he pointed to, then he said "if you really want a view you should climb that", and pointed to the summit of Sierra Blanca. We chatted for a few minutes about the climb, and I thanked him and headed to the summit via Lookout. About an hour later arrived at the summit. Dozens of posts in the summit register. Hike was uneventful. Well worth the effort. By the way, the Ski Apache web site advertises that if you hike up, the ride back down (in the gondola) is "on us". It was a very pleasant 15 minute ride back down from the top of the lifts. I believe Ski Apache is owned/operated by the Apache tribe.