You strike me as an ILI.
Generally speaking, you seem to be a gamma intuitive thinker since you give priority to a realistic/longterm viewpoint on most, if not all matters. This is supported by your observation that you do not really publicly come apart at the seams, emotionally speaking. You seem to be ILI in particular, since you have a natural inclination (whether it is suppressed or not) to be truthful in conversation when it comes to relatively indisputable facts.
To give some elaboration, there are also some aspects of your communication style which stand out in favor of ILI. You have a generally neutral stance on issues combined with some adopted consideration of social convention. Adopted in the sense that they don't come naturally, and must be consciously worked on. While you are formal for the sake of accuracy in talking about issues of interest, you have an overall informal way of talking to ease conversation and as a gesture of goodwill, as you put it.
Your adaptability (due to irrationality?) combined with difficult life circumstances and a subtle appreciation of systems could make it harder to self-type. Being adaptable to circumstances can make it hard to get at the real you and knowing that manifestations of behavior patterns (in this case, type functions) can take many different forms could make it hard to pin down a particular type. Still, in my outside view I would say you are ILI.
I would like to add that I do think that ILIs have strong emotions and affections
![:)](images/smilies/icon_smile.gif)
The form these emotions take is just not necessarily explicit to some.
Also, for various reasons, I have found video VI to be pretty helpful in making final decisions. Depending on the strength of one's internal conception of others, it might actually be easy to adopt another type's written style. Acting out a whole other type with your body is harder. Let's not argue if it's a science on either the VI or socionics level, because that's a whole other ballpark right? I can pull up a couple examples of what I think are ILIs if you'd like.