My T is lovely and helpful, and I do feel that I have come a long way with her. But I do often come home from therapy, and think I wish I'd said x,y,z, or I didn't really express what I meant properly, or how did we end up talking about a certain subject for so long, when there were other things I should have/ wanted to talk about.
Text therapy really focuses on what you need to say, but it is a more time-consuming process. Because, like cat, I find myself editing, and checking that it makes sense, and reads well etc. Mainly because, a bit like posting here, you need to get your point across correctly first time. Face to face, it's a lot easier to quickly reiterate what you want to say, if you feel you didn't say it right the first time. By text, that is a much more lengthy process - hence wanting to get it 'right' in the first place.
I think one of the things about text is that it does require absolute honesty in saying how you are feeling, because of the lack of face to face contact. For example during my face to face therapy my T might say, something like, I can see that this is causing some anxiety, because your demeanour has changed, you appear tense. Also she will help with grounding etc, if I was dissociating, where as that's not possible if exchanging text, where replies may not be made for several days. Other more obvious things such as tears or your general appearance (are you looking after yourself?), are going to be seen face to face, but not by text.
Anthony, I'm assuming that the people you have helped by text chat are people from this forum? If that is the case, then you have had a head start in helping these people, because they feel they already know you from reading your posts. And you 'know' them to a certain extent from their posts. They know your no-nonsense approach, and already trust you. Starting up a completely new text only therapy relationship could take a bit more time to get results, because the 'getting to know each other stage', by text alone could take quite a while.
I think both have their place, and could sometimes be a very individual choice. If I had to choose just one right now - I would take text, over face to face.