Interesting topic.
I guess any software project needs a person who can conceive the whole project. It can be named an architect or project manager, whatever.
But you are talking about "someone who will be able to structure the company, hire key staff members and manage the projects/orders". These functions probably are not an architect's responsibilities.

I have been using SNIP Live Chat for a couple years. From my experience there is no so many people clicking on "Live Chat" button. It is hard to say why.
About 50% of chatters just coming because of curiosity.
So I think it is not so effective as it seemed.

Also take a look at [URL=""][/URL]
We have been using it for a while. You may use any Jabber client for the chat, pretty cool feature.