Yeah the coat issue is something that comes up with a lot of characters actually. It's the limitation of rigging character models as separate pieces, they tend to move through each other sometimes. The pieces can be cut and attached to the part that's moving through them, but with Rufus for example than the bottom of his coat will move with his legs.
By the way, as far as the HD models go if anyone is updating the chibi TA Cloud there's a transparency issue. Parts of it are solid black (0,0,0) which is used for transparency. If you look closely at the bottom of the feet and the middle of the legs you can see through them. You can see this on my release page actually, the large picture of the TA 2.0 battle model shows it (that pic was actually how I found the problem). You can just use the one I fixed, but the rsd files for the chibi model will have to be edited to use the single texture.