Glad to have found this thread!  I was given a pullman pan, and had made an attempt at shokupan using a pain de mie recipe (soft bread, wrong crumb, and top crust stuck to the lid despite oiling).  Recent venture to a local Japanese bakery for wonderful shokupan has renewed my interested in making use of this pullman pan.  I'll probably give one of the hokkaido milk bread recipes a try soon.   Another friend sent me this link: http://www.wretch.cc/blog/michelle212/21430881 It looks like it has the light, minimal crust, and a wonderful stretchy crumb.  But I can't read more than 5% of the words.  If that.  Though was told something about being using a mixer and dough being too wet to knead by hand.  Thought perhaps someone here might be interested as well.