My boss has used it and says it's pretty decent, but then he is a computer illiterate who types like e.e. cummings, so anything would be an improvement. But supposedly a paraplegic attorney at a firm where I formerly worked used it and liked it as well. (I've never tried it myself.)

My mother-in-law just talked to me about this a couple of days ago. Seems she was at her local PCUG, and the latest version of this was presented, and it was very good.
She's usually a pretty skeptical person about gadgets, so that's a pretty high recommendation. No guarantees from this corner, of course.

Such things are only useful if you type really really slowly ...

Thanks to all, will consider.

Well, mate, I used a prior version (well several versions ago) and it struck me even then as a useful tool for transcribing, hands free, notes, letters, etc. If you're a moderately decent typist, you probably can type faster, but I can imagine for lawyerly documentation which you may have a desire to finish outside the confines of your office....

I have thought about giving it a go again myself.