IWB Open Carry

[daniel1113]

This has probably been asked before, but searching for any posts related to "IWB" is tough with the search string minimum length requirement. So, please excuse my asking

When I open carry here in PA, I tend to wear my Milt Sparks VM-2 IWB holster rather than a OWB holster as I find the VM-2/IWB combination to be the most comfortable.

So, my question is simple: Is a gun carried in an IWB holster legally considered "open", or is the partial concealment of the holster enough to qualify as a concealed weapon?

Most of the definitions of open carry that I see are similar to the wording I found at http://definitions.uslegal.com/c/concealed-weapons/, which states that a weapon is not considered to be concealed if it is "carried in a belt holster which is wholly or substantially visible or carried in a case designed for carrying a firearm or dangerous weapon and which is wholly or substantially visible." So, is an IWB holster in which the entire grip of the pistol remains visible considered concealed or not?

You may be asking why I care, as I do have a LTCF here in PA, meaning I can carry open, concealed, or any combination thereof. Well, I will traveling back to CO for a little over a month this summer, and despite being a CO resident, my FL ccw permit is not valid there. That means I will be open carrying, and I would prefer to use my IWB holster if it won't lead to any legal trouble.

Thanks in advance.

EDIT: I realized after creating this post that these definitions probably vary from state to state. I would still appreciate any insight, however, I am off to read through all of Colorado's CCW laws.