Well, what do you mean by "loose"? Do you mean that it is easy to draw or that it wobbles front to back or side to side when holstered?
I have a JIT for an XD subcompact, which also fits my Sig 228 and USP Compact 45. None of these pistols wobble, they are each nicely seated when holstered. Each pistol, when the holster is in my hand and upside down, will fall out, though each has a different amount of friction on the way out.
Hope this helps.