I don't mean to be argumentative, but anyone who attempts to "check" on a business by visiting them when the company has been operating for many, many years and the share price (be it penny or not) has remained pretty much stable during that time is a little off base. If you don't do your DD and that doesn't include a visit to a company who is rightfully so secretive then don't invest. I just don't see it.
V is what it is and whether you have watched them for 10 years or 10 days you know what they are about and you know what they claim. It is going to happen or not. I for one believe it is, that is why I have I stake. Never, ever have I thought about visiting them. I own other stocks and don't think about visiting them either. If I choose to invest in a company that I can't verify their true existence then I may ask who has seen their operations, but clearly this is different, very different.